undo

undo

reverse or erase; annul; untie; unwrap: undo a knot
Not to be confused with:undue – exceeding the appropriate or normal; excessive: the use of undue force

un·do

U0064800 (ŭn-do͞o′)v. un·did (-dĭd′), un·done (-dŭn′), un·do·ing (-do͞o′ĭng), un·does (-dŭz′) v.tr.1. To reverse or erase; annul: impossible to undo the suffering caused by the war.2. To untie, disassemble, or loosen: undo a shoelace.3. To open (a parcel, for example); unwrap.4. a. To cause the ruin or downfall of; destroy.b. To throw into confusion; unsettle.v.intr. To come open or unfastened.

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un·do′er n.

undo

(ʌnˈduː) vb (mainly tr) , -does, -doing, -did or -done1. (also intr) to untie, unwrap, or open or become untied, unwrapped, etc2. to reverse the effects of3. to cause the downfall of4. obsolete to explain or solve unˈdoer n

un•do

(ʌnˈdu)

v.t. -did, -done, -do•ing. 1. to reverse the doing of. 2. to repair or erase: to undo the damage. 3. to bring to ruin; destroy. 4. to unfasten or unlatch. 5. to untie. [before 900] un•do′a•ble, adj.

undo

Past participle: undone
Gerund: undoing

Imperative
undo
undo

Present
I undo
you undo
he/she/it undoes
we undo
you undo
they undo

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

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

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

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

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

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

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

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

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

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

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

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

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

Thesaurus

Verb	1.	undo - cancel, annul, or reverse an action or its effect; "I wish I could undo my actions"change by reversal, reverse, turn - change to the contrary; "The trend was reversed"; "the tides turned against him"; "public opinion turned when it was revealed that the president had an affair with a White House intern"unbrace, unlace, untie - undo the ties of; "They untied the prisoner"unstrap - remove the strap or straps fromunhitch - unfasten or release from or as if from a hitchunpick - undo (the stitches) of (a piece of sewing)unfasten - cause to become undone; "unfasten your belt"unbelt - undo the belt of; "unbelt your trousers"unstaple - take the staples off; "unstaple the piece of paper from the receipt"unclip - remove the clip fromunbutton - undo the buttons of; "unbutton the shirt"unpin - remove the pins from; unfasten the pins ofdisconnect, unplug - pull the plug of (electrical appliances) and render inoperable; "unplug the hair dryer after using it"unbraid - undo the braids of; "unbraid my hair"unknot, unpick, unravel, unscramble, untangle - become or cause to become undone by separating the fibers or threads of; "unravel the thread"unwind, disentangle - separate the tangles ofunbuckle - undo the buckle of; "Unbuckle your seat belt"spread, unfold, open, spread out - spread out or open from a closed or folded state; "open the map"; "spread your arms"unwire - undo the wiring of
	2.	undo - deprive of certain characteristics unmakedestroy, destruct - do away with, cause the destruction or undoing of; "The fire destroyed the house"
	3.	undo - cause the ruin or downfall of; "A single mistake undid the President and he had to resign"ruin - destroy or cause to fail; "This behavior will ruin your chances of winning the election"
	4.	undo - cause to become loose; "undo the shoelace"; "untie the knot"; "loosen the necktie"untie, loosenalter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"
	5.	undo - remove the outer cover or wrapping of; "Let's unwrap the gifts!"; "undo the parcel"unwrapuncover, expose - remove all or part of one's clothes to show one's body; "uncover your belly"; "The man exposed himself in the subway"

undo

verb1. open, unfasten, loose, loosen, unlock, unwrap, untie, disengage, unbutton, disentangle, unstrap, unclasp I managed to undo a corner of the parcel.2. reverse, cancel, offset, wipe out, neutralize, invalidate, annul, nullify It would be difficult to undo the damage that had been done.3. ruin, defeat, destroy, wreck, shatter, upset, mar, undermine, overturn, quash, subvert, bring to naught Their hopes of a victory were undone by a goal from John Barnes.

undo

verb1. To remove or invalidate by or as if by running a line through or wiping clean:annul, blot (out), cancel, cross (off or out), delete, efface, erase, expunge, obliterate, rub (out), scratch (out), strike (out), wipe (out), x (out).Law: vacate.2. To free from ties or fasteners:disengage, loose, loosen, slip, unbind, unclasp, unfasten, unloose, unloosen, untie.3. To become or cause to become open:open, unclose.4. To cause the complete ruin or wreckage of:bankrupt, break down, cross up, demolish, destroy, finish, ruin, shatter, sink, smash, spoil, torpedo, wash up, wrack, wreck.Slang: total.Idiom: put the kibosh on.5. To lessen or deplete the nerve, energy, or strength of:attenuate, debilitate, devitalize, enervate, enfeeble, sap, undermine, unnerve, weaken.6. To lure or persuade into a sexual relationship or a sexual act:debauch, seduce.

Translations

松开解开扭转或破坏…的影响

undo

(anˈduː) – past tense unˈdid (-ˈdid) : past participle unˈdone (-ˈdan) – verb1. to unfasten or untie. Could you undo the knot in this string? 鬆開，解開 松开，解开 2. to reverse, or destroy, the effect of. The evil that he did can never be undone. 扭轉或消弭…的影響 扭转或破坏…的影响unˈdoing noun (the cause of) ruin or disaster. Gambling was his undoing. 毀滅(的原因) 毁灭unˈdone (-ˈdan) adjective (of work, a task etc) not done, or not finished. I don't like going to bed leaving jobs/work undone. (工作等)未完成的 未完成的

undo

→ 松开zhCN