sure meaning and definition

SURE adjective

Definition of sure (adjective)

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"
   • synonyms: certain
   • antonym: incertain
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"
   • synonyms: 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"
   • synonyms: certain
   • antonym: uncertain
4. physically secure or dependable
   • "a sure footing"; "was on sure ground"
5. reliable in operation or effect
   • "a quick and certain remedy"; "a sure way to distinguish the two"; "wood dust is a sure sign of termites"
   • synonyms: certain
6. (of persons) worthy of trust or confidence
   • "a sure (or trusted) friend"
   • synonyms: 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"
   • synonyms: indisputable

SURE adverb

Definition of sure (adverb)

1. 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"
   • synonyms: certainly, for certain, for sure, sure as shooting, sure enough, surely