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WordNet-OnlineFree dictionary and thesaurus of English. Definitions, synonyms, antonyms and more...
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Adjective sure has 9 senses
certain, sure - 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"Antonyms:  uncertain, unsure, incertain, ambivalent, doubtful, dubious, groping, hesitant
 
certain, sure - 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"Antonym:  careless (indirect, via careful)
 
certain, sure - 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"
sure - physically secure or dependable; "a sure footing"; "was on sure ground"Antonyms:  insecure, unsafe (indirect, via secure)
 
certain, sure - 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"Antonyms:  unreliable, undependable (indirect, via reliable, dependable)
 Antonyms:  unreliable, undependable (indirect, via reliable, dependable)
 
sure, trusted - (of persons) worthy of trust or confidence; "a sure (or trusted) friend"Antonyms:  untrustworthy, untrusty (indirect, via trustworthy)
 
sure - infallible or unfailing; "a sure (or true) sign of one's commitment"Antonym:  false (indirect, via true)
 
sure - certain not to fail; "a sure hand on the throttle"Antonym:  unsteady (indirect, via steady)
 
indisputable, sure - impossible to doubt or dispute; "indisputable (or sure) proof"Antonym:  uncertain (indirect, via certain)
 
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