sure

adjective

/ʃʊə(r)/, /ʃɔː(r)/

/ʃʊr/

(comparative surer, superlative surest)

You can also use more sure and most sure, especially in sense 1.Idioms

jump to other results

[not before noun] confident that you know something or that you are right synonym certain
- ‘Is that John over there?’ ‘I'm not sure’.
- You don't sound very sure.
- sure (that)… I'm pretty sure (that) he'll agree.
- Are you sure you don't mind?
- I’m sure he’s still alive.
- sure of something I hope you are sure of your facts.
- sure about something Are you sure about that?
- not sure how, whether, etc… Ask me if you're not sure how to do it.
- I'm not sure whether I should tell you this.
- not exactly/entirely/absolutely/really sure
- I still wasn't even sure who I was talking to.
- I like this bit, but I'm not so sure about that one.
opposite unsure
Extra Examples
- What makes you so sure she'll come back to you?
- I'm quite sure (that) I left my bag here.
- Potts was confident of taking the American title, but less sure about the world championship.
Topics Personal qualitiesa1
Oxford Collocations Dictionary
verbs
- be
- feel
- seem
- …
adverb
- absolutely
- completely
- quite
- …
preposition
- about
- of
See full entry
[not before noun] certain that you will receive something or that something will happen
- sure of something You're always sure of a warm welcome there.
- We could not be sure of financial support.
- sure of doing something England must win this game to be sure of qualifying for the World Cup.
Synonyms sure
sure
- confident
- convinced
- certain
- positive
- clear
These words all describe somebody who knows without doubt that something is true or will happen.
- sure [not before noun] without any doubt that you are right, that something is true, that you will get something or that something will happen:
  ‘Is that John over there?’ ‘I’m not sure.’
  Are you sure about that?
  England must win this game to be sure of qualifying.
  Sure is often used in negative statements and questions, because there is some doubt or worry over the matter. If there is no doubt, people often say quite sure: I’m quite sure (that) I left my bag here (= I have no doubt about it).
- confident completely sure that something will happen in the way that you want or expect:
  I’m quite confident that you’ll get the job.
  The team feels confident of winning.
  Confident is a stronger and more definite word than sure and is more often used in positive statements, when you feel no worry.
- convinced [not before noun] completely sure that something is true or right, especially because the evidence seems to prove it or somebody else has persuaded you to believe it:
  I’m convinced that she’s innocent.
- certain [not usually before noun] sure that you are right or that something is true:
  Are you absolutely certain about this?
sure or certain?Like sure, certain is often used in negative statements and questions. It is slightly more formal than sure; sure is more frequent, especially in spoken English.
- positive [not before noun] (rather informal) completely sure that something is true:
  She was positive that he’d been there.
  ‘Are you sure?’ ‘Positive.’
- clear (often used in negative statements and questions) having no doubt or confusion about something:
  My memory isn’t really clear on that point.
Patterns
- sure/confident/convinced/certain/positive/clear about something
- sure/confident/convinced/certain of something
- sure/confident/convinced/certain/positive/clear that…
- sure/certain/clear who/what/how, etc.
- to feel sure/confident/convinced/certain/positive
- quite/absolutely/completely/fairly/pretty sure/confident/convinced/certain/positive/clear
- not altogether sure/confident/convinced/certain/clear
Topics Doubt, guessing and certaintyb1
Oxford Collocations Dictionary
verbs
- be
- feel
- seem
- …
adverb
- absolutely
- completely
- quite
- …
preposition
- about
- of
See full entry
sure to do something certain to do something or to happen
- The exhibition is sure to be popular.
- It's sure to rain.
- You’re sure to get lost if you don’t keep to the path.
- She's sure to be picked for the team.
Synonyms certain
certain
- bound
- sure
- definite
- guaranteed
These are all words describing something that will definitely happen or is definitely true.
- certain that you can rely on to happen or be true:
  It’s certain that they will agree.
  They are certain to agree.
- bound [not before noun] certain to happen, or to do or be something. Bound is only used in the phrase bound to do/be, etc.: You’ve done so much work—you’re bound to pass the exam. • There are bound to be changes when the new system is introduced.
- sure certain to happen or be true; that can be trusted or relied on:
  She’s sure to be picked for the team.
  It’s sure to rain.
- definite (rather informal) certain to happen; that is not going to change:
  Is it definite that he’s leaving?
- guaranteed certain to have a particular result:
  That kind of behaviour is guaranteed to make him angry.
Patterns
- certain/sure of something
- certain/bound/sure/guaranteed to do something
- certain/definite that…
- I couldn’t say for certain/sure/definite.
Topics Doubt, guessing and certaintyb1
[usually before noun] that can be trusted or relied on
- It's a sure sign of economic recovery.
- There's only one sure way to do it.
- He is a sure bet for the presidential nomination (= certain to succeed).
- I told my friends that our winning was a sure thing.
Synonyms certain
certain
- bound
- sure
- definite
- guaranteed
These are all words describing something that will definitely happen or is definitely true.
- certain that you can rely on to happen or be true:
  It’s certain that they will agree.
  They are certain to agree.
- bound [not before noun] certain to happen, or to do or be something. Bound is only used in the phrase bound to do/be, etc.: You’ve done so much work—you’re bound to pass the exam. • There are bound to be changes when the new system is introduced.
- sure certain to happen or be true; that can be trusted or relied on:
  She’s sure to be picked for the team.
  It’s sure to rain.
- definite (rather informal) certain to happen; that is not going to change:
  Is it definite that he’s leaving?
- guaranteed certain to have a particular result:
  That kind of behaviour is guaranteed to make him angry.
Patterns
- certain/sure of something
- certain/bound/sure/guaranteed to do something
- certain/definite that…
- I couldn’t say for certain/sure/definite.
[usually before noun] steady and confident
- We admired her sure touch at the keyboard.

Word OriginMiddle English: from Old French sur, from Latin securus ‘free from care’.

Idioms

be sure to do something

used to tell somebody to do something
- Be sure to give your family my regards.
- Be sure to check out our website.
In spoken English and plus another verb can be used instead of to and the infinitive: Be sure and call me tomorrow.

for sure

(informal) without doubt
- No one knows for sure what happened.
- I think he'll be back on Monday, but I can't say for sure.
- One thing is for sure—it's not going to be easy.
- (North American English) ‘Will you be there?’ ‘For sure.’

a good/safe/sure bet

something that is likely to happen, to succeed or to be suitable
- He's a good bet to earn a spot on the US team.
- Clothes are a safe bet as a present for a teenager.
- The movie looks like a sure bet for Best Film.
Topics Doubt, guessing and certaintyc2

make sure (of something/that…)

to do something in order to be certain that something else happens
- Make sure (that) no one finds out about this.
- They scored another goal and made sure of victory.
- Our staff will do their best to make sure you enjoy your visit.
- To make doubly sure they would not be disturbed she turned the key in the lock.
Topics Doubt, guessing and certaintya2
to check that something is true or has been done
- She looked around to make sure that she was alone.
- I think the door's locked, but I'll just go and make sure.

sure of yourself

(sometimes disapproving) very confident
- She seems very sure of herself.

sure thing

(informal, especially North American English) used to say ‘yes’ to a suggestion or request
- ‘Are you coming?’ ‘Sure thing.’
Topics Suggestions and advicec1

to be sure

(formal) used to admit that something is true
- He is intelligent, to be sure, but he's also very lazy.

单词	sure
释义	sure adjective /ʃʊə(r)/, /ʃɔː(r)/ /ʃʊr/ (comparative surer, superlative surest) You can also use more sure and most sure, especially in sense 1.Idioms jump to other results [not before noun] confident that you know something or that you are right synonym certain ‘Is that John over there?’ ‘I'm not sure’. You don't sound very sure. sure (that)… I'm pretty sure (that) he'll agree. Are you sure you don't mind? I’m sure he’s still alive. sure of something I hope you are sure of your facts. sure about something Are you sure about that? not sure how, whether, etc… Ask me if you're not sure how to do it. I'm not sure whether I should tell you this. not exactly/entirely/absolutely/really sure I still wasn't even sure who I was talking to. I like this bit, but I'm not so sure about that one. opposite unsure Extra Examples What makes you so sure she'll come back to you? I'm quite sure (that) I left my bag here. Potts was confident of taking the American title, but less sure about the world championship. Topics Personal qualitiesa1 Oxford Collocations Dictionaryverbs be feel seem … adverb absolutely completely quite … preposition about of See full entry [not before noun] certain that you will receive something or that something will happen sure of something You're always sure of a warm welcome there. We could not be sure of financial support. sure of doing something England must win this game to be sure of qualifying for the World Cup. Synonyms suresure confident convinced certain positive clear These words all describe somebody who knows without doubt that something is true or will happen. sure [not before noun] without any doubt that you are right, that something is true, that you will get something or that something will happen: ‘Is that John over there?’ ‘I’m not sure.’ Are you sure about that? England must win this game to be sure of qualifying. Sure is often used in negative statements and questions, because there is some doubt or worry over the matter. If there is no doubt, people often say quite sure: I’m quite sure (that) I left my bag here (= I have no doubt about it). confident completely sure that something will happen in the way that you want or expect: I’m quite confident that you’ll get the job. The team feels confident of winning. Confident is a stronger and more definite word than sure and is more often used in positive statements, when you feel no worry. convinced [not before noun] completely sure that something is true or right, especially because the evidence seems to prove it or somebody else has persuaded you to believe it: I’m convinced that she’s innocent. certain [not usually before noun] sure that you are right or that something is true: Are you absolutely certain about this? sure or certain?Like sure, certain is often used in negative statements and questions. It is slightly more formal than sure; sure is more frequent, especially in spoken English. positive [not before noun] (rather informal) completely sure that something is true: She was positive that he’d been there. ‘Are you sure?’ ‘Positive.’ clear (often used in negative statements and questions) having no doubt or confusion about something: My memory isn’t really clear on that point. Patterns sure/confident/convinced/certain/positive/clear about something sure/confident/convinced/certain of something sure/confident/convinced/certain/positive/clear that… sure/certain/clear who/what/how, etc. to feel sure/confident/convinced/certain/positive quite/absolutely/completely/fairly/pretty sure/confident/convinced/certain/positive/clear not altogether sure/confident/convinced/certain/clear Topics Doubt, guessing and certaintyb1 Oxford Collocations Dictionaryverbs be feel seem … adverb absolutely completely quite … preposition about of See full entry sure to do something certain to do something or to happen The exhibition is sure to be popular. It's sure to rain. You’re sure to get lost if you don’t keep to the path. She's sure to be picked for the team. Synonyms certaincertain bound sure definite guaranteed These are all words describing something that will definitely happen or is definitely true. certain that you can rely on to happen or be true: It’s certain that they will agree. They are certain to agree. bound [not before noun] certain to happen, or to do or be something. Bound is only used in the phrase bound to do/be, etc.: You’ve done so much work—you’re bound to pass the exam. • There are bound to be changes when the new system is introduced. sure certain to happen or be true; that can be trusted or relied on: She’s sure to be picked for the team. It’s sure to rain. definite (rather informal) certain to happen; that is not going to change: Is it definite that he’s leaving? guaranteed certain to have a particular result: That kind of behaviour is guaranteed to make him angry. Patterns certain/sure of something certain/bound/sure/guaranteed to do something certain/definite that… I couldn’t say for certain/sure/definite. Topics Doubt, guessing and certaintyb1 [usually before noun] that can be trusted or relied on It's a sure sign of economic recovery. There's only one sure way to do it. He is a sure bet for the presidential nomination (= certain to succeed). I told my friends that our winning was a sure thing. Synonyms certaincertain bound sure definite guaranteed These are all words describing something that will definitely happen or is definitely true. certain that you can rely on to happen or be true: It’s certain that they will agree. They are certain to agree. bound [not before noun] certain to happen, or to do or be something. Bound is only used in the phrase bound to do/be, etc.: You’ve done so much work—you’re bound to pass the exam. • There are bound to be changes when the new system is introduced. sure certain to happen or be true; that can be trusted or relied on: She’s sure to be picked for the team. It’s sure to rain. definite (rather informal) certain to happen; that is not going to change: Is it definite that he’s leaving? guaranteed certain to have a particular result: That kind of behaviour is guaranteed to make him angry. Patterns certain/sure of something certain/bound/sure/guaranteed to do something certain/definite that… I couldn’t say for certain/sure/definite. [usually before noun] steady and confident We admired her sure touch at the keyboard. Word OriginMiddle English: from Old French sur, from Latin securus ‘free from care’. Idioms be sure to do something used to tell somebody to do something Be sure to give your family my regards. Be sure to check out our website. In spoken English and plus another verb can be used instead of to and the infinitive: Be sure and call me tomorrow. for sure (informal) without doubt No one knows for sure what happened. I think he'll be back on Monday, but I can't say for sure. One thing is for sure—it's not going to be easy. (North American English) ‘Will you be there?’ ‘For sure.’ a good/safe/sure bet something that is likely to happen, to succeed or to be suitable He's a good bet to earn a spot on the US team. Clothes are a safe bet as a present for a teenager. The movie looks like a sure bet for Best Film. Topics Doubt, guessing and certaintyc2 make sure (of something/that…) to do something in order to be certain that something else happens Make sure (that) no one finds out about this. They scored another goal and made sure of victory. Our staff will do their best to make sure you enjoy your visit. To make doubly sure they would not be disturbed she turned the key in the lock. Topics Doubt, guessing and certaintya2 to check that something is true or has been done She looked around to make sure that she was alone. I think the door's locked, but I'll just go and make sure. sure of yourself (sometimes disapproving) very confident She seems very sure of herself. sure thing (informal, especially North American English) used to say ‘yes’ to a suggestion or request ‘Are you coming?’ ‘Sure thing.’ Topics Suggestions and advicec1 to be sure (formal) used to admit that something is true He is intelligent, to be sure, but he's also very lazy. sure adverb /ʃʊə(r)/, /ʃɔː(r)/ /ʃʊr/ (informal, especially North American English)Idioms jump to other results used to say ‘yes’ to somebody ‘Will you open the wine?’ ‘Sure, where is it?’ Did it hurt? Sure it hurt. Sure, no problem. used to emphasize something that you are saying Boy, it sure is hot. ‘Amazing view’. ‘Sure is.’ I sure hope you are right about that. That song sure as hell sounds familiar. He sure looked unhappy. Working in technology sure beats flipping burgers. I sure do agree with that. used to reply to somebody who has just thanked you for something ‘Thanks for the ride.’ ‘Sure—anytime.’ Word OriginMiddle English: from Old French sur, from Latin securus ‘free from care’. Idioms (as) sure as eggs is eggs (old-fashioned, British English, informal) used to say that something is definitely true sure enough used to say that something happened as expected I said he'd forget, and sure enough he did. ‘Stop,’ she said, ‘I can hear something.’ Sure enough, in the distance we could hear the sound of a car approaching.
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