sure Meaning in the Cambridge English Dictionary

Meaning of “sure” in the English Dictionary

"sure" in British English

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uk   /ʃɔːr/  us   /ʃʊr/
A2 certain; without any ​doubt: "What's ​wrong with him?" "I'm not really sure." I'm sure (that) I ​left my ​keys on the ​table. I feelabsolutely sure (that) you've made the ​rightdecision. It now seems sure (that) the ​election will ​result in another ​victory for the ​government. Shaun isn't sure whether/if he'll be ​able to come to the ​party or not. Is there anything you're not sure of/about? We ​arrive early to be sure of getting a good ​seat. There is only one sure way (= one way that can be ​trusted) of ​finding out the ​truth.
See also
for sure B1 certain or ​certainly: I ​know for sure that I won't be ​able to go to the ​party. One thing's for sure - ​once the baby's ​born, ​yourlives will never be the same sure of yourself B2 to be very or too ​confident: She's ​become much more sure of herself since she got a ​ sure of sth B2 be ​confident that something is ​true: He said that he wasn't ​completely sure of his ​ sure of/about sb UK to have ​confidence in and ​trust someone: Henry has only been ​working for us for a ​short while, and we're not really sure about him ​yet. You can always be sure of sure to C1 to be ​certain to: She's sure to ​win. I ​want to go ​somewhere where we're sure to have good ​weather.make sure (that) A2 to ​look and/or take ​action to be ​certain that something ​happens, is ​true, etc.: Make sure you ​lock the ​door when you go out. If you have a sure ​knowledge or ​understanding of something, you ​know or ​understand it very well: I don't ​think he has a very sure ​understanding of the ​situation.
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uk   /ʃɔːr/  us   /ʃʊr/ informal
A2 certainly: "Do you ​want to come ​swimming with us?" "Sure."mainly US "Will you ​help me with this?" "Sure I will."US I sure am ​hungry.US "I can't do it!" "Sure you can. I'll ​help you." US said when someone has ​thanked you: "Thanks for ​helping us out." "Sure, any ​time."
More examples
  • Sure I'll ​help you.
  • 'Are you coming to the ​park?' ' Sure!'
  • 'Do you ​fancy a ​pizza?' 'Sure. Let's ​ask Andy too.'
(Definition of sure from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"sure" in American English

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sureadjective [-er/-est only]

 us   /ʃʊər/  /ʃoʊr/
certain; without any ​doubt: "No more ​dessert for me, ​thank you." "Are you sure?" [+ (that) clause] I’m sure (that) I ​left my ​keys on the ​table. [+ question word] I’m not sure where they ​live. If there’s anything you’re not sure of/about, just ​ask. He said that he wasn’t ​completely sure of his ​facts (= not ​certain that his ​information was ​correct). We ​arrived early, to be sure of getting a good ​seat. [+ to infinitive] She’s sure to ​win. If you are sure of yourself, you are confident: She’s much more sure of herself since she ​startedwork.

sureadverb [-er/-est only]

 us   /ʃʊr/  /ʃoʊr/
certainly: "Do you ​want to come ​swimming with us?" "Sure." I sure am ​hungry (= I am very ​hungry).
(Definition of sure from the Cambridge Academic Content Dictionary © Cambridge University Press)
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