matter of course, induction, evidence, a safe bet, foregone conclusion, beyond (any) doubt, demonstration, belief, persuasion, self-assurance, hunch, inevitability, satisfaction, cinch, sure thing, firm/safe ground, deduction, consequence, ineluctability, a foregone conclusion, a mathematical certainty, inevitableness, positiveness, certain, firmness, true, reality, result, suspect, face, guarantee, assuredness, self-confidence, gut feeling/instinct, conclusion, doubtlessness, inference, cocksureness
certainty (part of speech: noun)
truth (part of speech: noun)
reliability (part of speech: noun)
- In my place, I know to a certainty, Ernest, you'd have done exactly as I did. - "The Beckoning Hand and Other Stories The Beckoning Hand--Lucretia--The Third Time--The Gold Wulfric--My Uncle's Will--The Two Carnegies--Olga Davidoff's Husband--John Cann's Treasure--Isaline and I--Professor Milliter's Dilemma--In Strict Confidence--The ", Grant Allen.
- And he was such a certainty to me. - "The Complete Project Gutenberg Works of George Meredith", George Meredith.
- There was a reason for this certainty, right or wrong, in the minds of the sealers. - "Masters of the Wheat-Lands", Harold Bindloss.