Certain
Antonyms of CERTAIN
- apocryphal, baseless, counterfeit, unassuming, spurious, unclear, disputed, common, unconfident, fallible, fictitious, specified, inexact, unreliable, fabulous, false, unlikely, diffident, doubted, hypothetical, obscure, indefinite, indistinct, exploded, known, vague, avoidable, indecisive, evadable, unpredictable, disputable, preventable, named, general, faltering, uncertain, refutable, hesitant, wavering, Contradictable, ordinary, undecided, usual, open-ended, adjustable, improbable, dishonest, unsure, vacillating, imprecise, unauthorized, unimportant, unreal, controversial, theoretical, invalid, academic, dubious, doubting, doubtful, careless, speculative, questionable, unspecified, answerable, unfixed.
Examples of usage:
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" I am certain you would, my lord; I am certain you would. "The Disowned, Complete" by Edward Bulwer-Lytton
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I am certain he did not see it; I could hardly see it myself, looking for it. "Revenge!" by by Robert Barr
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I am certain you would have done the same yourself. "The Mating of Lydia" by Mrs. Humphry Ward
