10. (adverb)surely, certainly, sure, for sure, for certain, sure enough, sure as shooting definitely or positively (`sure' is sometimes used informally for `surely') Synonyms: certainly, surely, for sure, sure as shooting, sure, for certain, sure enough Antonyms: careless, unreliable, groping, unsafe, doubtful, undependable, incertain, untrustworthy, unsteady, insecure, uncertain, unsure, dubious, ambivalent, untrusty, false
Synonyms, Thesaurus & Antonyms of 'sure'
English Synonyms and Antonyms
1. sure That is authentic which is true to the facts; that is genuine which is true to its own claims; as, authentic history; genuine money. A 'genuine' work is one written by the author whose name Synonyms: authentic, accepted, certain, original, sure, accredited, current, real, true, authoritative, genuine, received, trustworthy, authorized, legitimate, reliable, veritable Antonyms: apocryphal, counterfeit, exploded, false, spurious, baseless, disputed, fabulous, fictitious, unauthorized