open

o·pen

O0088300 (ō′pən)adj.1. a. Affording unobstructed entrance and exit; not shut or closed.b. Affording unobstructed passage or view: open waters; the open countryside.2. a. Having no protecting or concealing cover: an open wound; an open sports car.b. Completely obvious; blatant: open disregard of the law.c. Carried on in full view of others; not hidden or private: open warfare; open family strife.d. Sports Not defended or not closely defended by an opponent: an open goal; an open receiver.3. a. Not sealed or tied: an open envelope.b. Spread out; unfolded: an open book.4. Having interspersed gaps, spaces, or intervals: open ranks; an open weave.5. a. Accessible to all; unrestricted as to participants: an open competition.b. Free from limitations, boundaries, or restrictions: open registration.c. Enterable by registered voters regardless of political affiliation: an open primary.d. Computers Of or relating to a file that can be accessed.6. a. Lacking effective regulation: an open town in which gambling predominated.b. Not legally repressed: open drug trafficking.7. a. Susceptible; vulnerable: open to interpretation; an issue that is open to question.b. Willing to consider or deal with something: open to suggestions.8. a. Available; obtainable: The job is still open.b. Available for use: an open account; the only course open to us.9. Ready to transact business: The store is open.10. Not engaged or filled: has an open hour for emergency cases.11. Not yet decided; subject to further thought: an open question.12. a. Characterized by lack of secrecy or reserve; candid: Please be open with me. See Synonyms at frank¹.b. Free of prejudice; receptive to new ideas and arguments: She listened to the proposal with an open mind.c. Generous: He is very open with his time.13. Printing a. Widely spaced or leaded. Used of typeset or other printed matter.b. Having constituent elements separated by a space in writing or printing: The word sea lion is an open compound.14. Music a. Not stopped by a finger. Used of a string or hole of an instrument.b. Produced by an unstopped string or hole or without the use of slides, valves, or keys: an open note on a trumpet.c. Played without a mute: an open wind instrument.15. Linguistics a. Articulated with the tongue in a low position, as the vowel in far.b. Ending in a vowel or diphthong: an open syllable.16. Designating a method of punctuation in which commas and other marks are used sparingly.17. Being in operation; live: an open microphone.18. New England Clear. Used of weather. fair¹19. Electricity Containing a gap across which electricity cannot pass: an open circuit.20. Mathematics a. Of or relating to an interval containing neither of its endpoints.b. Of or being a set such that at least one neighborhood of every point in the set is within the set.c. Of or being a set that is the complement of a closed set.21. Sports a. Having the forward foot farther from the intended point of impact with the ball than the rear foot: an open batting stance.b. Held or swung with the top or outer edge of the striking face pointing slightly farther away from the objective than the lower or inner edge: The club struck the ball with an open face, causing a slice.22. Physics a. Of or relating to an open system.b. Of or relating to an open universe.v. o·pened, o·pen·ing, o·pens v.tr.1. a. To make no longer closed or fastened: open a window.b. To remove obstructions from; clear: open a drain.2. a. To make or force an opening in: The surgeon opened the patient's chest.b. To make (a hole or gap) in something: opened a hole in the levee.c. To form spaces or gaps between: soldiers opening ranks.d. To break the continuity of; make a gap in: open a circuit.3. a. To remove the cover, cork, or lid from: open a jar.b. To remove the wrapping from: open a package.4. a. To move apart or unfold so that the inner parts are displayed; spread out: open a newspaper; open a book.b. To part the lids or lips of: Open your eyes. Open your mouth.5. a. To begin or form the start of; initiate: The scene that opens the novel.b. To begin the operation of: open a new business.c. To begin (the action in a game of cards) by making the first bid, placing the first bet, or playing the first lead.6. To make available for use: opened the area to commercial development; opened the computer file and retrieved some data.7. To make more responsive, understanding, or generous: a question that opened his mind to a different way of looking at the problem.8. To make known to the public: opened the formerly classified files to reporters.9. Sports To modify (one's stance), as in baseball or golf, so that it is open.10. a. To perform as the first act of (a concert, for example): An up-and-coming rock group opened the music festival.b. To perform prior to the main act of (a concert, for example): Two different bands opened the concert on Friday night.v.intr.1. To become no longer closed or fastened: The door opened slowly.2. To draw apart; separate: The wound opened under pressure.3. To spread apart; unfold: The tulips opened.4. To come into view; become revealed: The plain opened before us.5. To become responsive, understanding, or generous: His heart finally opened, and he understood her disappointment.6. a. To be or serve as a beginning; commence: The meeting opened with a call to order.b. To give an initial statement in a trial.c. To begin business or operation: The store opens early on Saturday.d. To be performed, shown, or made available to the public for the first time: The play opens next week.e. To be priced or listed at a specified amount when trading begins: Shares opened high and fell sharply.f. To make a bid, bet, or lead in starting a game of cards.7. To give access: The room opens onto a terrace.8. a. To perform as the first act of a multi-act performance: The singer was nervous to open for so many talented musicians.b. To perform prior to the main act of a multi-act performance: The young comedians were thrilled to open for such a well-known standup comic.n.1. An unobstructed area of land or water: sailed out of the harbor into the open.2. The outdoors: camping in the open.3. An undisguised or unconcealed state: brought the problem out into the open.4. A tournament or contest in which both professional and amateur players may participate.5. A beginning: Shares were down at the market open.Phrasal Verb: open up1. To spread out; unfold: A green valley opened up before us.2. To begin operation or start (something): The new store opens up next month. The band opened up the concert with an old favorite.3. To begin firing: The artillery opened up at dawn.4. Informal To speak freely and candidly: At last the frightened witness opened up and told the truth.5. To make an opening in by cutting: The surgeon opened up the patient's chest.6. To make available or accessible: open up new markets.7. Informal To accelerate. Used of a motor vehicle.8. Sports To get a sudden, insurmountable lead in (an athletic contest).Idioms: open fire To begin firing a gun or guns. open (one's) eyes To become aware of the truth of a situation.

[Middle English, from Old English; see upo in Indo-European roots.]

o′pen·ly adv.o′pen·ness n.

open

(ˈəʊpən) adj1. not closed or barred: the door is open. 2. affording free passage, access, view, etc; not blocked or obstructed: the road is open for traffic. 3. not sealed, fastened, or wrapped: an open package. 4. having the interior part accessible: an open drawer. 5. extended, expanded, or unfolded: an open newspaper; an open flower. 6. ready for business: the shops are open. 7. able to be obtained; available: the position advertised last week is no longer open. 8. unobstructed by buildings, trees, etc: open countryside. 9. free to all to join, enter, use, visit, etc: an open competition. 10. unengaged or unoccupied: the doctor has an hour open for you to call. 11. (Shooting) See open season12. not decided or finalized: an open question. 13. ready to entertain new ideas; not biased or prejudiced: an open mind. 14. unreserved or candid: she was very open in her description. 15. liberal or generous: an open hand. 16. extended or eager to receive (esp in the phrase with open arms)17. exposed to view; blatant: open disregard of the law. 18. liable or susceptible: you will leave yourself open to attack if you speak. 19. (of climate or seasons) free from frost; mild20. (Nautical Terms) free from navigational hazards, such as ice, sunken ships, etc: open water. 21. US without legal restrictions or enforceable regulations, esp in relation to gambling, vice, etc: an open town. 22. without barriers to prevent absconding: an open prison. 23. having large or numerous spacing or apertures: open ranks. 24. full of small openings or gaps; porous: an open texture. 25. (Printing, Lithography & Bookbinding) printing (of type matter) generously leaded or widely spaced26. (Classical Music) music a. (of a violin or guitar string) not stopped with the fingerb. (of a pipe, such as an organ pipe) not closed at either endc. (of a note) played on such a string or pipe27. (Commerce) commerce a. in operation; active: an open account. b. unrestricted; unlimited: open credit; open insurance cover. 28. (Banking & Finance) See open cheque29. (of a return ticket) not specifying a date for travel30. (General Sporting Terms) sport a. (of a goal, court, etc) unguarded or relatively unprotected: the forward missed an open goal. b. (of a stance, esp in golf) characterized by the front of the body being turned forward31. (Medicine) (of a wound) exposed to the air32. (Medicine) (esp of the large intestine) free from obstruction33. (Military) undefended and of no military significance: an open city. 34. (Phonetics & Phonology) phonetics a. denoting a vowel pronounced with the lips relatively wide apartb. denoting a syllable that does not end in a consonant, as in pa35. (Chess & Draughts) chess (of a file) having no pawns on it36. (Mathematics) maths (of a set) containing points whose neighbourhood consists of other points of the same set: points inside a circle are an open set. 37. (Computer Science) computing (of software or a computer system) designed to an internationally agreed standard in order to allow communication between computers, irrespective of size, manufacturer, etcvb38. to move or cause to move from a closed or fastened position: to open a window. 39. (when: intr, foll by on or onto) to render, be, or become accessible or unobstructed: to open a road; to open a parcel; the door opens into the hall. 40. (intr) to come into or appear in view: the lake opened before us. 41. (Medicine) (tr) to puncture (a boil) so as to permit drainage42. to extend or unfold or cause to extend or unfold: to open a newspaper. 43. to disclose or uncover or be disclosed or uncovered: to open one's heart. 44. to cause (the mind) to become receptive or (of the mind) to become receptive45. to operate or cause to operate: to open a shop. 46. (when: intr, sometimes foll by out) to make or become less compact or dense in structure: to open ranks. 47. to set or be set in action; start: to open a discussion; to open the batting. 48. (Banking & Finance) (tr) to arrange for (a bank account, savings account, etc) usually by making an initial deposit49. to turn to a specified point in (a book, magazine, etc): open at page one. 50. (Law) law to make the opening statement in (a case before a court of law)51. (Card Games) (intr) cards to bet, bid, or lead first on a handn52. the open any wide or unobstructed space or expanse, esp of land or water53. See open air54. (General Sporting Terms) sport a competition which anyone may enter55. bring into the open to make evident or public56. come into the open to become evident or public[Old English; related to Old French open, epen, Old Saxon opan, Old High German offan] ˈopenable adj ˈopenly adv ˈopenness n

o•pen

(ˈoʊ pən)
adj. 1. not closed or barred at the time, as a doorway or passageway by a door. 2. (of a door, window sash, or the like) set so as to permit passage through the opening it can be used to close. 3. having the interior immediately accessible, as a box with the lid raised. 4. relatively free of obstructions. 5. constructed so as not to be fully enclosed: an open boat. 6. having relatively large or numerous spaces, voids, or intervals: open ranks of soldiers. 7. relatively unoccupied by buildings, trees, etc.: open country. 8. not covered or closed; with certain parts apart: open eyes. 9. without a covering, esp. a protective covering; exposed: an open wound. 10. extended or unfolded: an open newspaper. 11. without restrictions as to who may participate: an open session. 12. accessible or available: Which job is open? 13. ready for or carrying on normal trade or business: The new store is now open. 14. not engaged or committed: open time. 15. exposed to general view or knowledge: open disregard of the rules. 16. unreserved, candid, or frank, as a person or speech. 17. generous, liberal, or bounteous: to give with an open hand. 18. liable or subject: open to question. 19. undecided; unsettled: several open questions. 20. without effective or enforced legal, commercial, or moral regulations: an open town. 21. unguarded by an opponent: An open receiver caught the pass. 22. noting the part of the sea beyond headlands or enclosing areas of land. 23. free of navigational hazards: an open coast. 24. not yet balanced or adjusted, as an account. 25. a. (of a vowel) articulated with a relatively large opening above the tongue or with a relatively large oral aperture, as the vowel sound of cot; low. Compare close (def. 50). b. (of a syllable) ending with a vowel. Compare closed (def. 6). 26. (of a compound word) written with the constituent words separated by a space, as police officer. 27. Music. (of a string) not stopped by a finger. 28. Math. (of a set) consisting of points having neighborhoods wholly contained in the set, as the set of points within a circle. 29. (of a fabric or weave) so loosely constructed that spaces are visible between warp and filling yarns. v.t. 30. to move (a door, window sash, etc.) from a shut or closed position. 31. to render (a doorway, window, etc.) unobstructed. 32. to render the interior of (a box, drawer, etc.) readily accessible. 33. to make accessible or available: to open a port for trade. 34. to establish for business purposes or for public use: to open an office. 35. to set in action, begin, start, or commence (sometimes fol. by up): to open the bidding. 36. to uncover, lay bare, or expose to view. 37. to expand, unfold, or spread out: to open a map. 38. to make less compact or less closely spaced: to open ranks. 39. to disclose, reveal, or divulge. 40. to render (the mind) accessible to knowledge, sympathy, etc. 41. to make or produce (an opening): to open a way through a crowd. 42. to make an opening in. 43. Law. to revoke (a decree, judgment, etc.) esp. so as to hear further arguments. v.i. 44. to become open. 45. to afford access or have an opening to a place: a door that opens into a garden. 46. (of a building) to open its doors to the public. 47. to begin, start, or commence: The game opened with the national anthem. 48. to part or seem to part: The clouds opened. 49. to become disclosed or revealed. 50. to come into view; become more visible or plain. 51. (of the mind) to become receptive to knowledge, sympathy, etc. 52. to spread out or expand, as the hand or a fan. 53. to turn the pages of a book, newspaper, etc.: Open to page 22. 54. to spread or come apart; burst: The wound opened. 55. to become less compact or less closely spaced: The ranks began to open. 56. open up, a. to make or become open. b. to begin firing a gun, or the like. c. to share or become willing to share one's feelings, confidences, etc. n. 57. an open or clear space. 58. the open air or the outdoors. 59. the open water, as of the sea. 60. an opening or aperture. 61. an opening or opportunity. 62. a contest or tournament in which both amateurs and professionals may compete. [before 900; Middle English, Old English] o′pen•ly, adv. o′pen•ness, n. syn: See frank¹.

Open/Shut

Closed [a newspaper] up like a surgeon closing an incision above an inoperable truth —Elizabeth Spencer
The door is closed like the shutter of a stalled-out camera —Thomas McGuane
It [a door] came [open] easy … like a ghost had blown it open from inside —Jay Parini
Locked up tighter than Dick’s hatband —Richard Ford
Ford’s simile used to describe a home business that’s not open, is a takeoff on the American colloquialism generally linked with stinginess.
See Also: THRIFT
Open and shut as if cast from the shadow of a fallen angel’s wing —Anon
(The elevator doors) opened suavely, like an expensive cream sliding smoothly on a flawless face —Judith Martin
(Let your mind) open like a clam when the waters slide back to feed it —Marge Piercy
Opens like a summer rose —George Garrett
(In love we) open wide as a house to a summer afternoon —Marge Piercy
(Wake up please) open yourself like a little umbrella —Donald Justice
(Our room was closed off and) sealed, like a grave inside a pyramid —Yehuda Amichai
[Emotions] sewn up tighter than a Victorian daughter’s drawers —Roderic Jeffries
Shut down (the long Minnesota winter) like the white lid of a box —F. Scott Fitzgerald
Shut firmly in like a trunk locked up when the key is lost —Eibhlin Dhubh Ni Chonnaill
[Window-blinds] shut like an eye that sleeps —H. G. Wells
Shut tight as a drum —Anon
Shut up like a rabbit trap —Noel Streatfeild
(J. B’s face) shut with a snap like a rat-trap —Gavin Lyall
(A world had opened and) was closing … like a curtain being silently drawn —John McGahern

open

Open can be a verb or an adjective.

1. used as a verb

If you open something such as a door, you move it so that it no longer covers a hole or gap.

She opened the door with her key.He opened the window and looked out.

Be Careful!
When you use open with a person as the subject, you must put an object after it. Don't say, for example, 'I went to the door and opened'. You say 'I went to the door and opened it'.

I went to the front door, opened it, and looked out.2. used as an adjective

When a door or window is not covering the hole or gap it is intended to cover, you say that it is open.

The door was open.He was sitting by the open window of the office.

Be Careful!
When a door or window is in this position, don't say that it is 'opened'. Opened is the past form or -ed participle of the verb open. You only use it when you are describing the action of opening a door or window.

The front door was opened, then suddenly shut again.3. used after other verbs

Open can be used after other verbs of position or movement.

The doors of the ninth-floor rooms hung open.Bernard pushed the door fully open.He noticed the way the drawer slid open.

Open is one of several words that can be used after verbs of position or movement like this. Others are closed, shut, free, loose, straight, and upright. These words are sometimes considered to be adverbs and sometimes adjectives.

Be Careful!
Don't use open as a verb or adjective to talk about electrical equipment. For example, if someone makes some electrical equipment work by pressing a switch or turning a knob, don't say that they 'open' it. Say that they put it on, switch it on or turn it on.

Do you mind if I put the light on?I went across and switched on the TV.I turned on the radio as I did every morning.

open

Past participle: opened
Gerund: opening

Imperative
open
open

Present
I open
you open
he/she/it opens
we open
you open
they open

Preterite
I opened
you opened
he/she/it opened
we opened
you opened
they opened

Present Continuous
I am opening
you are opening
he/she/it is opening
we are opening
you are opening
they are opening

Present Perfect
I have opened
you have opened
he/she/it has opened
we have opened
you have opened
they have opened

Past Continuous
I was opening
you were opening
he/she/it was opening
we were opening
you were opening
they were opening

Past Perfect
I had opened
you had opened
he/she/it had opened
we had opened
you had opened
they had opened

Future
I will open
you will open
he/she/it will open
we will open
you will open
they will open

Future Perfect
I will have opened
you will have opened
he/she/it will have opened
we will have opened
you will have opened
they will have opened

Future Continuous
I will be opening
you will be opening
he/she/it will be opening
we will be opening
you will be opening
they will be opening

Present Perfect Continuous
I have been opening
you have been opening
he/she/it has been opening
we have been opening
you have been opening
they have been opening

Future Perfect Continuous
I will have been opening
you will have been opening
he/she/it will have been opening
we will have been opening
you will have been opening
they will have been opening

Past Perfect Continuous
I had been opening
you had been opening
he/she/it had been opening
we had been opening
you had been opening
they had been opening

Conditional
I would open
you would open
he/she/it would open
we would open
you would open
they would open

Past Conditional
I would have opened
you would have opened
he/she/it would have opened
we would have opened
you would have opened
they would have opened

Thesaurus

Noun	1.	open - a clear or unobstructed space or expanse of land or water; "finally broke out of the forest into the open"cleararea, country - a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography); "it was a mountainous area"; "Bible country"
	2.	open - where the air is unconfined; "he wanted to get outdoors a little"; "the concert was held in the open air"; "camping in the open"open air, outdoors, out-of-doorsexterior, outside - the region that is outside of something
	3.	open - a tournament in which both professionals and amateurs may playtournament, tourney - a sporting competition in which contestants play a series of games to decide the winner
	4.	open - information that has become public; "all the reports were out in the open"; "the facts had been brought to the surface"surfacegeneral knowledge, public knowledge - knowledge that is available to anyone
Verb	1.	open - cause to open or to become open; "Mary opened the car door"open upunbar - remove a bar from (a door)break open - open with force; "He broke open the picnic basket"click open - open with a clicking sound; "These keys have clicked open many doors"reopen - open again or anew; "They reopened the theater"unlock - open the lock of; "unlock the door"unbolt - undo the bolt of; "unbolt the door"unseal - break the seal of; "He unsealed the letter"uncork - draw the cork from (bottles); "uncork the French wine"jimmy, lever, prise, pry, prize - to move or force, especially in an effort to get something open; "The burglar jimmied the lock": "Raccoons managed to pry the lid off the garbage pail"gap, breach - make an opening or gap inlance - open by piercing with a lancet; "lance a boil"close, shut - move so that an opening or passage is obstructed; make shut; "Close the door"; "shut the window"
	2.	open - start to operate or function or cause to start operating or functioning; "open a business"open upestablish, found, launch, set up - set up or found; "She set up a literacy program"close down, close up, shut down, close, fold - cease to operate or cause to cease operating; "The owners decided to move and to close the factory"; "My business closes every night at 8 P.M."; "close up the shop"
	3.	open - become open; "The door opened"open upchange state, turn - undergo a transformation or a change of position or action; "We turned from Socialism to Capitalism"; "The people turned against the President when he stole the election"unfasten - become undone or untied; "The shoelaces unfastened"fly open - come open suddenly; "the doors flew open in the strong gust"close, shut - become closed; "The windows closed with a loud bang"
	4.	open - begin or set in action, of meetings, speeches, recitals, etc.; "He opened the meeting with a long speech"embark on, start up, commence, start - get off the ground; "Who started this company?"; "We embarked on an exciting enterprise"; "I start my day with a good breakfast"; "We began the new semester"; "The afternoon session begins at 4 PM"; "The blood shed started when the partisans launched a surprise attack"inaugurate - open ceremoniously or dedicate formallycall to order - open formally; "the chairman called the meeting to order by pounding his gavel"pioneer, open up - open up an area or prepare a way; "She pioneered a graduate program for women students"close - finish or terminate (meetings, speeches, etc.); "The meeting was closed with a charge by the chairman of the board"
	5.	open - spread out or open from a closed or folded state; "open the map"; "spread your arms"spread, unfold, spread outundo - cancel, annul, or reverse an action or its effect; "I wish I could undo my actions"divaricate - spread apart; "divaricate one's fingers"exfoliate - spread by opening the leaves ofgrass - spread out clothes on the grass to let it dry and bleachbutterfly - cut and spread open, as in preparation for cooking; "butterflied shrimp"uncross - change from a crossed to an uncrossed position; "She uncrossed her legs"splay - spread open or apart; "He splayed his huge hands over the table"
	6.	open - make available; "This opens up new possibilities"open upyield, afford, give - be the cause or source of; "He gave me a lot of trouble"; "Our meeting afforded much interesting information"
	7.	open - become available; "an opportunity opened up"open upcome up, arise - result or issue; "A slight unpleasantness arose from this discussion"
	8.	open - have an opening or passage or outlet; "The bedrooms open into the hall"
	9.	open - make the opening move; "Kasparov opened with a standard opening"chess game, chess - a board game for two players who move their 16 pieces according to specific rules; the object is to checkmate the opponent's kingmove, go - have a turn; make one's move in a game; "Can I go now?"
	10.	open - afford access to; "the door opens to the patio"; "The French doors give onto a terrace"afford, give
	11.	open - display the contents of a file or start an application as on a computerdisplay, exhibit, expose - to show, make visible or apparent; "The Metropolitan Museum is exhibiting Goya's works this month"; "Why don't you show your nice legs and wear shorter skirts?"; "National leaders will have to display the highest skills of statesmanship"close - cause a window or an application to disappear on a computer desktop
Adj.	1.	open - affording unobstructed entrance and exit; not shut or closed; "an open door"; "they left the door open"unfastenedopen - affording free passage or access; "open drains"; "the road is open to traffic"; "open ranks"shut, unopen, closed - not open; "the door slammed shut"
	2.	open - affording free passage or access; "open drains"; "the road is open to traffic"; "open ranks"open, unfastened - affording unobstructed entrance and exit; not shut or closed; "an open door"; "they left the door open"unsealed - not closed or secured with or as if with a seal; "unsealed goods"; "the letter arrived unsealed"closed - not open or affording passage or access; "the many closed streets made travel difficult"; "our neighbors peeped from behind closed curtains"
	3.	open - with no protection or shield; "the exposed northeast frontier"; "open to the weather"; "an open wound"exposedunprotected - lacking protection or defense
	4.	open - open to or in view of all; "an open protest"; "an open letter to the editor"public - not private; open to or concerning the people as a whole; "the public good"; "public libraries"; "public funds"; "public parks"; "a public scandal"; "public gardens"; "performers and members of royal families are public figures"
	5.	open - used of mouth or eyes; "keep your eyes open"; "his mouth slightly opened"openedshut, closed - used especially of mouth or eyes; "he sat quietly with closed eyes"; "his eyes were shut against the sunlight"
	6.	open - not having been filled; "the job is still open"available - obtainable or accessible and ready for use or service; "kept a fire extinguisher available"; "much information is available through computers"; "available in many colors"; "the list of available candidates is unusually long"
	7.	open - accessible to all; "open season"; "an open economy"unrestricted - not subject to or subjected to restriction
	8.	open - not defended or capable of being defended; "an open city"; "open to attack"assailable, undefendable, undefendedvulnerable - susceptible to attack; "a vulnerable bridge"
	9.	open - (of textures) full of small openings or gaps; "an open texture"; "a loose weave"loosecoarse, harsh - of textures that are rough to the touch or substances consisting of relatively large particles; "coarse meal"; "coarse sand"; "a coarse weave"
	10.	open - having no protecting cover or enclosure; "an open boat"; "an open fire"; "open sports cars"unenclosed - not closed in our surrounded or included; "an unenclosed porch"; "unenclosed common land"
	11.	open - (set theory) of an interval that contains neither of its endpointsmath, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangementclosed - (set theory) of an interval that contains both its endpoints
	12.	open - not brought to a conclusion; subject to further thought; "an open question"; "our position on this bill is still undecided"; "our lawsuit is still undetermined"undecided, unresolved, undeterminedunsettled - still in doubt; "an unsettled issue"; "an unsettled state of mind"
	13.	open - not sealed or having been unsealed; "the letter was already open"; "the opened package lay on the table"openedunsealed - not closed or secured with or as if with a seal; "unsealed goods"; "the letter arrived unsealed"
	14.	open - without undue constriction as from e.g. tenseness or inhibition; "the clarity and resonance of an open tone"; "her natural and open response"unconstricted - not constricted physically or by extension psychologically; "healthy unconstricted arteries"
	15.	open - ready or willing to receive favorably; "receptive to the proposals"receptive
	16.	open - open and observable; not secret or hidden; "an overt lie"; "overt hostility"; "overt intelligence gathering"; "open ballots"overtexplicit, expressed - precisely and clearly expressed or readily observable; leaving nothing to implication; "explicit instructions"; "she made her wishes explicit"; "explicit sexual scenes"public - not private; open to or concerning the people as a whole; "the public good"; "public libraries"; "public funds"; "public parks"; "a public scandal"; "public gardens"; "performers and members of royal families are public figures"unconcealed - not concealed or hidden; "her unconcealed hostility poisoned the atmosphere"; "watched with unconcealed curiosity"
	17.	open - not requiring union membership; "an open shop employs nonunion workers"nonunion - not belonging to or not allowing affiliation with a trade union; "nonunion carpenters"; "a nonunion contractor"
	18.	open - possibly accepting or permitting; "a passage capable of misinterpretation"; "open to interpretation"; "an issue open to question"; "the time is fixed by the director and players and therefore subject to much variation"subject, capablesusceptible - (often followed by `of' or `to') yielding readily to or capable of; "susceptible to colds"; "susceptible of proof"
	19.	open - affording free passage or view; "a clear view"; "a clear path to victory"; "open waters"; "the open countryside"clearunobstructed - free from impediment or obstruction or hindrance; "an unobstructed view"
	20.	open - openly straightforward and direct without reserve or secretiveness; "his candid eyes"; "an open and trusting nature"; "a heart-to-heart talk"heart-to-heart, candidartless, ingenuous - characterized by an inability to mask your feelings; not devious; "an ingenuous admission of responsibility"
	21.	open - ready for business; "the stores are open"active - full of activity or engaged in continuous activity; "an active seaport"; "an active bond market"; "an active account"

open

verb1. unfasten, unlock, unclasp, throw wide, unbolt, opN (S.M.S.), unbar, unclose He opened the window and looked out.
unfasten close, lock, shut, fasten2. unwrap, uncover, undo, unravel, untie, unstrap, unseal, unlace, opN (S.M.S.) The Inspector opened the parcel.
unwrap wrap, seal3. uncork, crack (open), broach, opN (S.M.S.) Let's open another bottle of wine.4. unfold, spread (out), expand, stretch out, unfurl, unroll, opN (S.M.S.) When you open the map, you will find it is divided into squares.
unfold fold5. clear, unblock, opN (S.M.S.) Police have opened the road again after the crash.
clear block, shut, obstruct6. undo, loosen, unbutton, unfasten, opN (S.M.S.) He opened his shirt to show me his scar.
undo fasten, do up7. begin business, start trading, begin trading, admit customers, opN (S.M.S.) The new shopping complex opens tomorrow.8. start, begin, launch, trigger, kick off (informal), initiate, commence, get going, instigate, kick-start, inaugurate, set in motion, get (something) off the ground (informal), enter upon, opN (S.M.S.) They are now ready to open negotiations.
start end, close, finish, conclude, terminate9. begin, start, commence, opN (S.M.S.) The service opened with a hymn.
begin end, close, finish, conclude10. split, break, separate, crack, burst, break up, give way, gape, rupture, come apart, opN (S.M.S.) The ground opened beneath his feet.11. reveal, bare, exhibit, disclose, divulge, lay bare, expose to view, opN (S.M.S.) He really opened his heart to me.adjective1. unclosed, unlocked, ajar, unfastened, yawning, gaping, unlatched, unbolted, partly open, unbarred, opN (S.M.S.), off the latch an open door
unclosed closed, locked, shut, fastened2. unsealed, unstoppered, opN (S.M.S.) an open bottle of milk
unsealed sealed, unopened3. extended, expanded, unfolded, stretched out, spread out, unfurled, straightened out, unrolled, opN (S.M.S.) A newspaper lay open on the coffee table.
extended shut, folded4. frank, direct, natural, plain, innocent, straightforward, sincere, transparent, honest, candid, truthful, upfront (informal), plain-spoken, above board, unreserved, artless, ingenuous, guileless, straight from the shoulder (informal), opN (S.M.S.) She has an open, trusting nature.
frank reserved, withdrawn, cunning, sly, secretive, artful, introverted5. obvious, clear, frank, plain, apparent, visible, patent, evident, distinct, pronounced, manifest, transparent, noticeable, blatant, conspicuous, downright, overt, unmistakable, palpable, recognizable, avowed, flagrant, perceptible, much in evidence, undisguised, unsubtle, barefaced, unconcealed, opN (S.M.S.) their open dislike of each other
obvious secret, hidden, disguised, veiled, covert6. receptive, welcoming, sympathetic, responsive, amenable, opN (S.M.S.) He seems open to suggestions.7. susceptible, subject, exposed, vulnerable, in danger, disposed, liable, wide open, unprotected, at the mercy of, left open, laid bare, an easy target for, undefended, laid open, defenceless against, unfortified, opN (S.M.S.) They left themselves open to accusations of double standards.
susceptible protected, defended8. unresolved, doubtful, unsettled, unanswered, undecided, debatable, unsolved, up in the air, moot, arguable, yet to be decided, opN (S.M.S.) It is an open question how long his commitment will last.9. clear, free, passable, uncluttered, unhindered, unimpeded, navigable, unobstructed, unhampered, opN (S.M.S.) The emergency services will do their best to keep the highway open.
clear obstructed10. unenclosed, wide, rolling, sweeping, exposed, extensive, bare, spacious, wide-open, undeveloped, uncrowded, unfenced, not built-up, unsheltered, opN (S.M.S.) Police will continue their search of nearby open ground.
unenclosed covered, limited, crowded, bounded, restricted, confined, enclosed, built-up11. undone, gaping, unbuttoned, unzipped, agape, unfastened, opN (S.M.S.) Her blouse was open to the waist.
undone fastened, done up12. available, to hand, accessible, handy, vacant, on hand, obtainable, attainable, at your fingertips, at your disposal, opN (S.M.S.) There are a wide range of career opportunities open to young people.13. general, public, free, catholic, broad, universal, blanket, unconditional, across-the-board, unqualified, all-inclusive, unrestricted, overarching, free to all, nondiscriminatory, opN (S.M.S.) an open invitation
general private, protected, restricted, inaccessible14. vacant, free, available, empty, up for grabs (informal), unoccupied, unfilled, unengaged, opN (S.M.S.) The job is still open.15. generous, kind, liberal, charitable, benevolent, prodigal, bountiful, open-handed, unstinting, beneficent, bounteous, munificent, ungrudging, opN (S.M.S.) the public's open and generous response to the appeal16. gappy, loose, lacy, porous, honeycombed, spongy, filigree, fretted, holey, openwork Ciabatta has a distinctive crisp crust and open texture.

open

adjective1. Free from obstructions:clear, free, unblocked, unimpeded, unobstructed.2. Having no protecting or concealing cover:exposed, uncovered, unprotected.3. Not restricted or confined to few:open-door, public, unrestricted.4. Tending to incur:liable, prone, subject, susceptible, susceptive, vulnerable.5. Ready and willing to receive favorably, as new ideas:acceptant, amenable, open-minded, receptive, responsive.6. Available for use:accessible, employable, operable, operative, practicable, usable, utilizable.7. Not spoken for or occupied:free, uninhabited, unoccupied, unreserved.8. Marked by lack of firm decision or commitment; of questionable outcome:indefinite, uncertain, undecided, undetermined, unresolved, unsettled, unsure, vague.Idiom: up in the air.9. Manifesting honesty and directness, especially in speech:candid, direct, downright, forthright, frank, honest, ingenuous, man-to-man, plainspoken, straight, straightforward, straight-out, unreserved.Informal: straight-from-the-shoulder, straight-shooting.verb1. To become or cause to become open:unclose, undo.2. To rid of obstructions:clear, free, unblock.3. To move or arrange so as to cover a larger area.Out or up:expand, extend, fan (out), outstretch, spread, stretch, unfold, unroll.4. To go about the initial step in doing (something):approach, begin, commence, embark, enter, get off, inaugurate, initiate, institute, launch, lead off, set about, set out, set to, start, take on, take up, undertake.Informal: kick off.Idioms: get cracking, get going, get the show on the road.

Translations

开着的打开敝开的空旷的营业

open

(ˈəupən) adjective1. not shut, allowing entry or exit. an open box; The gate is wide open.开着的2. allowing the inside to be seen. an open book.敝开的3. ready for business etc. The shop is open on Sunday afternoons; After the fog had cleared, the airport was soon open again; The gardens are open to the public.营业着的4. not kept secret. an open show of affection.公开的5. frank. He was very open with me about his work.坦率的6. still being considered etc. Leave the matter open.悬而未决的7. empty, with no trees, buildings etc. I like to be out in the open country; an open space.空旷的 verb1. to make or become open. He opened the door; The door opened; The new shop opened last week.打开2. to begin. He opened the meeting with a speech of welcome.开始ˈopener noun something that opens (something). a tin-opener.开瓶刀ˈopening noun1. a hole; a clear or open space. an opening in the fence/forest. 洞，缺口 2. a beginning. the opening of the film; (also adjective) the chairman's opening remarks. 开始，开端 3. the act of becoming or making open, the ceremony of making open. the opening of a flower/shop/door; the opening of the new theatre. 开张（开业），打開（門），开幕，（花朵）绽开 4. an opportunity for work. There are good openings in the automobile industry. 职位的空缺，缺额 ˈopenly adverb frankly. She talked very openly about it.坦率地ˈopen-air adjective outside. an open-air meeting.野外ˌopen-ˈminded adjective willing to consider new ideas. an open-minded approach to the problem.虚心的ˌopen-ˈplan adjective (of a building) built with few walls inside. an open-plan office. 没有固定隔墙的（办公楼） be an open secret to be known to many people although supposed to be a secret. It's an open secret that she's getting married next week.公开秘密bring (something) out into the open to make (something) public. This affair has been kept a secret for too long – it's time it was brought out into the open.诉诸公众in the open outside; in the open air. It's very healthy for children to be able to play in the open.在户外in the open air not in a building. If it doesn't rain, we'll have the party in the open air.在室外的keep/have an open mind to have a willingness to listen to or accept new ideas, other people's suggestions etc (eg before making a decision). It doesn't seem to be a very good plan, but I think we should keep an open mind about it for the time being. 虚心听取（或接受）别人的意见 open on to (of a door etc) to open towards. Our front door opens straight on to the street.通往...the open sea any area of sea far from land. When they reached the open sea, they were faced with large waves.公海open to1. likely or willing to receive. open to charges of corruption; open to suggestions from any member of staff.愿意接受2. possible. There are only two courses of action open to us. 对...开放（可能的） open up1. to open (a shop etc). I open up the shop at nine o'clock every morning.开业2. to open (a box etc) completely. He opened up the parcel. 开，打开 3. to open the (main) door of a building etc. `Open up!' shouted the policeman. `We know you are in there!'开门with open arms in a very friendly way. They received their visitors with open arms.热诚地

open

→ 开着的zhCN, 打开zhCN, 营业zhCN

May I open the window? → 我可以打开窗户吗？
Are you open? → 你们现在营业吗？
Is the temple open to the public? → 寺庙对游客开放吗？
Is it open today? → 今天开门吗？
When does the bank open? → 银行几点开门？
I can't open the window → 窗户打不开
The door won't open → 门开不了

open

Related to open: Open University, Open relationship

all
verb
adj
noun

Synonyms for open

verb unfasten

Synonyms

unfasten
unlock
unclasp
throw wide
unbolt
opN
unbar
unclose

Antonyms

close
lock
shut
fasten

verb unwrap

Synonyms

unwrap
uncover
undo
unravel
untie
unstrap
unseal
unlace
opN

Antonyms

wrap
seal

verb uncork

Synonyms

uncork
crack (open)
broach
opN

verb unfold

Synonyms

unfold
spread (out)
expand
stretch out
unfurl
unroll
opN

Antonyms

fold

verb clear

Synonyms

clear
unblock
opN

Antonyms

block
shut
obstruct

verb undo

Synonyms

undo
loosen
unbutton
unfasten
opN

Antonyms

fasten
do up

verb begin business

Synonyms

begin business
start trading
begin trading
admit customers
opN

verb start

Synonyms

start
begin
launch
trigger
kick off
initiate
commence
get going
instigate
kick-start
inaugurate
set in motion
get (something) off the ground
enter upon
opN

Antonyms

end
close
finish
conclude
terminate

verb begin

Synonyms

begin
start
commence
opN

Antonyms

end
close
finish
conclude

verb split

Synonyms

split
break
separate
crack
burst
break up
give way
gape
rupture
come apart
opN

verb reveal

Synonyms

reveal
bare
exhibit
disclose
divulge
lay bare
expose to view
opN

adj unclosed

Synonyms

unclosed
unlocked
ajar
unfastened
yawning
gaping
unlatched
unbolted
partly open
unbarred
opN
off the latch

Antonyms

closed
locked
shut
fastened

adj unsealed

Synonyms

unsealed
unstoppered
opN

Antonyms

sealed
unopened

adj extended

Synonyms

extended
expanded
unfolded
stretched out
spread out
unfurled
straightened out
unrolled
opN

Antonyms

shut
folded

adj frank

Synonyms

frank
direct
natural
plain
innocent
straightforward
sincere
transparent
honest
candid
truthful
upfront
plain-spoken
above board
unreserved
artless
ingenuous
guileless
straight from the shoulder
opN

Antonyms

reserved
withdrawn
cunning
sly
secretive
artful
introverted

adj obvious

Synonyms

obvious
clear
frank
plain
apparent
visible
patent
evident
distinct
pronounced
manifest
transparent
noticeable
blatant
conspicuous
downright
overt
unmistakable
palpable
recognizable
avowed
flagrant
perceptible
much in evidence
undisguised
unsubtle
barefaced
unconcealed
opN

Antonyms

secret
hidden
disguised
veiled
covert

adj receptive

Synonyms

receptive
welcoming
sympathetic
responsive
amenable
opN

adj susceptible

Synonyms

susceptible
subject
exposed
vulnerable
in danger
disposed
liable
wide open
unprotected
at the mercy of
left open
laid bare
an easy target for
undefended
laid open
defenceless against
unfortified
opN

Antonyms

protected
defended

adj unresolved

Synonyms

unresolved
doubtful
unsettled
unanswered
undecided
debatable
unsolved
up in the air
moot
arguable
yet to be decided
opN

adj clear

Synonyms

clear
free
passable
uncluttered
unhindered
unimpeded
navigable
unobstructed
unhampered
opN

Antonyms

obstructed

adj unenclosed

Synonyms

unenclosed
wide
rolling
sweeping
exposed
extensive
bare
spacious
wide-open
undeveloped
uncrowded
unfenced
not built-up
unsheltered
opN

Antonyms

covered
limited
crowded
bounded
restricted
confined
enclosed
built-up

adj undone

Synonyms

undone
gaping
unbuttoned
unzipped
agape
unfastened
opN

Antonyms

fastened
done up

adj available

Synonyms

available
to hand
accessible
handy
vacant
on hand
obtainable
attainable
at your fingertips
at your disposal
opN

adj general

Synonyms

general
public
free
catholic
broad
universal
blanket
unconditional
across-the-board
unqualified
all-inclusive
unrestricted
overarching
free to all
nondiscriminatory
opN

Antonyms

private
protected
restricted
inaccessible

adj vacant

Synonyms

vacant
free
available
empty
up for grabs
unoccupied
unfilled
unengaged
opN

adj generous

Synonyms

generous
kind
liberal
charitable
benevolent
prodigal
bountiful
open-handed
unstinting
beneficent
bounteous
munificent
ungrudging
opN

adj gappy

Synonyms

gappy
loose
lacy
porous
honeycombed
spongy
filigree
fretted
holey
openwork

Synonyms for open

adj free from obstructions

Synonyms

clear
free
unblocked
unimpeded
unobstructed

adj having no protecting or concealing cover

Synonyms

exposed
uncovered
unprotected

adj not restricted or confined to few

Synonyms

open-door
public
unrestricted

adj tending to incur

Synonyms

liable
prone
subject
susceptible
susceptive
vulnerable

adj ready and willing to receive favorably, as new ideas

Synonyms

acceptant
amenable
open-minded
receptive
responsive

adj available for use

Synonyms

accessible
employable
operable
operative
practicable
usable
utilizable

adj not spoken for or occupied

Synonyms

free
uninhabited
unoccupied
unreserved

adj marked by lack of firm decision or commitment; of questionable outcome

Synonyms

indefinite
uncertain
undecided
undetermined
unresolved
unsettled
unsure
vague

adj manifesting honesty and directness, especially in speech

Synonyms

candid
direct
downright
forthright
frank
honest
ingenuous
man-to-man
plainspoken
straight
straightforward
straight-out
unreserved
straight-from-the-shoulder
straight-shooting

verb to become or cause to become open

Synonyms

unclose
undo

verb to rid of obstructions

Synonyms

clear
free
unblock

verb to move or arrange so as to cover a larger area

Synonyms

expand
extend
fan
outstretch
spread
stretch
unfold
unroll

verb to go about the initial step in doing (something)

Synonyms

approach
begin
commence
embark
enter
get off
inaugurate
initiate
institute
launch
lead off
set about
set out
set to
start
take on
take up
undertake
kick off

Synonyms for open

noun a clear or unobstructed space or expanse of land or water

Synonyms

clear

Related Words

area
country

noun where the air is unconfined

Synonyms

open air
outdoors
out-of-doors

Related Words

exterior
outside

noun a tournament in which both professionals and amateurs may play

Related Words

tournament
tourney

noun information that has become public

Synonyms

surface

Related Words

general knowledge
public knowledge

verb cause to open or to become open

Synonyms

open up

Related Words

unbar
break open
click open
reopen
unlock
unbolt
unseal
uncork
jimmy
lever
prise
pry
prize
gap
breach
lance

Antonyms

close
shut

verb start to operate or function or cause to start operating or functioning

Synonyms

open up

Related Words

establish
found
launch
set up

Antonyms

close down
close up
shut down
close
fold

verb become open

Synonyms

open up

Related Words

change state
turn
unfasten
fly open

Antonyms

close
shut

verb begin or set in action, of meetings, speeches, recitals, etc.

Related Words

embark on
start up
commence
start
inaugurate
call to order
pioneer
open up

Antonyms

verb spread out or open from a closed or folded state

Synonyms

spread
unfold
spread out

Related Words

undo
divaricate
exfoliate
grass
butterfly
uncross
splay

open

o·pen

open

o•pen

Open/Shut

open

open

open

open

open

open

open

open

open

open

open

open

open

open

open

open

o·pen

open

Patient discussion about open

Open

Open

Open

Open

Open

OPEN

open

Synonyms for open

verb unfasten

Synonyms

Antonyms

verb unwrap

Synonyms

Antonyms

verb uncork

Synonyms

verb unfold

Synonyms

Antonyms

verb clear

Synonyms

Antonyms

verb undo

Synonyms

Antonyms

verb begin business

Synonyms

verb start

Synonyms

Antonyms

verb begin

Synonyms

Antonyms

verb split

Synonyms

verb reveal

Synonyms

adj unclosed

Synonyms

Antonyms

adj unsealed

Synonyms

Antonyms

adj extended

Synonyms

Antonyms

adj frank

Synonyms

Antonyms

adj obvious

Synonyms

Antonyms

adj receptive

Synonyms

adj susceptible

Synonyms