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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 feel absolutely sure (that) you've made the right decision. 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, your lives will never be the same again.
be sure of yourself
B2 to be very or too confident: She's become much more sure of herself since she got a job.
be sure of sth
B2 be confident that something is true: He said that he wasn't completely sure of his facts.
be 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 Kay.
be 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."

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  • 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 started work.

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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“sure” in British English

“sure” in American English

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