Home › Words › C › certaintycertainty/ˈsɝtn̩ti/certainty means the state of being certain.certainty is pronounced /ˈsɝtn̩ti/.EtymologyFrom Middle English certeynte (“surety”), from Anglo-Norman certeinte, from Old French certeinete, from Vulgar Latin *certānitās, from Latin certus.nounThe state of being certain.e.g.“with certainty”An instance of being certain.A fact or truth unquestionably established.e.g.“Certainties are uninteresting and sating.” — 1824, Walter Savage Landor, Imaginary Conversations of Literary Men and Statesmen, volume I, London: […] Taylor and Hessey, […], →OCLC:Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.certainness 89% match — The state or quality of being certain. vs certainty →certitude 75% match — Sureness, certainty. vs certainty →certainity 73% match — Synonym of certainty. vs certainty →assuredness 72% match — The state or quality of being assured. vs certainty →sartainty 70% match — certainty vs certainty →certitudinal 70% match — Of or pertaining to certitude. vs certainty →certitudinous 70% match — Characterised by certitude. vs certainty →certain 69% match — Sure in one's mind, positive; absolutely confident in the truth of something. vs certainty →