AskDefine | Define sure

Dictionary Definition

sure adj
1 having or feeling no doubt or uncertainty; confident and assured; "felt certain of success"; "was sure (or certain) she had seen it"; "was very sure in his beliefs"; "sure of her friends" [syn: certain(p)] [ant: uncertain, uncertain]
2 exercising or taking care great enough to bring assurance; "be certain to disconnect the iron when you are through"; "be sure to lock the doors" [syn: certain]
3 certain to occur; destined or inevitable; "he was certain to fail"; "his fate is certain"; "In this life nothing is certain but death and taxes"- Benjamin Franklin; "he faced certain death"; "sudden but sure regret"; "he is sure to win" [syn: certain] [ant: uncertain]
4 physically secure or dependable; "a sure footing"; "was on sure ground"
5 capable of being depended on; "a quick and certain remedy"; "a sure way to distinguish the two"; "wood dust is a sure sign of termites" [syn: certain]
6 (of persons) worthy of trust or confidence; "a sure (or trusted) friend" [syn: trusted]
7 infallible or unfailing; "a sure (or true) sign of one's commitment"
8 certain not to fail; "a sure hand on the throttle"
9 impossible to doubt or dispute; "indisputable (or sure) proof" [syn: indisputable] adv : definitely or positively (`sure' is sometimes used informally for `surely'); "the results are surely encouraging"; "she certainly is a hard worker"; "it's going to be a good day for sure"; "they are coming, for certain"; "they thought he had been killed sure enough"; "he'll win sure as shooting"; "they sure smell good"; "sure he'll come" [syn: surely, certainly, for sure, for certain, sure enough, sure as shooting]

User Contributed Dictionary



From sur (or sure) < securus


  • (UK) /ʃʊə(ɹ)/, /SU@(r)/
  • (US) /ʃʊɹ/, /SUr/
  • Rhymes: -ʊə(r)



  1. Physically secure and certain, non-failing, reliable.



physically secure and certain, reliable


  1. Yes, of course.



yes, of course


  • 1996, T.F. Hoad, The Concise Oxford Dictionary of Etymology, Oxford University Press, ISBN 0192830988



  1. feminine of sûr
  2. feminine of sur

Old English


From Germanic, related to sūr ‘sour’.






  1. plural feminine/neuter form of sur



  1. See sur

Extensive Definition

Sure or SURE may refer to:

In music

sure in Japanese: シュア

Synonyms, Antonyms and Related Words

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