Synonyms and Antonyms of dubious

  1. 1 giving good reason for being doubted, questioned, or challenged any letter bearing the signature of Geronimo would be of dubious authenticity, to say the least Synonyms of dubious debatable, disputable, dodgy [chiefly British], doubtable, doubtful, dubitable, equivocal, fishy, problematic (also problematical), queer, questionable, shady, shaky, suspect, suspiciousWords Related to dubious alleged, so-called, supposed; moot; ambiguous, open, unclear; uncertain, undecided, undetermined; far-fetched, flimsy, improbable, unlikely, weakNear Antonyms of dubious decisive, definitive; clear, obvious, open-and-shut, positiveAntonyms of dubious certain, hands-down, incontestable, indisputable, indubitable, questionless, sure, undeniable, undoubted, unproblematic, unquestionable

  2. 2 slow to begin or proceed with a course of action because of doubts or uncertainty I'm dubious about our plan to go hang gliding without having had any training Synonyms of dubious cagey (also cagy), disinclined, hesitant, indisposed, loath (also loth or loathe), reluctant, reticentWords Related to dubious uneager, unenthusiastic; averse, unwilling; ambivalent, conflicted, doubtful, faltering, halting, indecisive, infirm, irresolute, questioning, skeptical, uncertain, undecided, unsure, vacillating, wobbly (also wabbly); fainthearted, shy, timidNear Antonyms of dubious eager, enthusiastic, glad, happy, keen; ready, willing; certain, decided, determined, resolute, sure, unquestioningAntonyms of dubious disposed, inclined

  3. 3 not likely to be true or to occur made the dubious claim of being of royal blood Synonyms of dubious doubtful, improbable, far-fetched, flimsy, questionable, unapt, unlikelyWords Related to dubious implausible, impossible, inconceivable, incredible, unbelievable, unimaginable, unthinkable; absurd, bizarre, crazy, fantastic (also fantastical), foolish, insane, nonsensical, odd, outlandish, preposterous, ridiculous, unreal, wild; outside, remote, slightNear Antonyms of dubious believable, conceivable, credible, earthly, imaginable, plausible; possible, potential; liableAntonyms of dubious likely, probable

  4. 4 not feeling sure about the truth, wisdom, or trustworthiness of someone or something dubious about a diet that claims I can eat all I want and still lose weight Synonyms of dubious distrustful, doubtful, hinky [slang], mistrustful, skeptical, suspicious, trustless, uncertain, unconvinced, undecided, unsettled, unsureWords Related to dubious ambivalent, conflicted, equivocal; diffident, insecure; halting, hesitant, indecisive, irresolute, vacillating, waveringNear Antonyms of dubious assured, confident, sanguine, self-assured; decisive, determined, resoluteAntonyms of dubious certain, convinced, positive, sure

Synonym Discussion of dubious

doubtful, dubious, problematic, questionable mean not affording assurance of the worth, soundness, or certainty of something. doubtful implies little more than a lack of conviction or certainty.
    • doubtful about whether I said the right thing
dubious stresses suspicion, mistrust, or hesitation.
    • dubious about the practicality of the scheme
problematic applies especially to things whose existence, meaning, fulfillment, or realization is highly uncertain.
    • whether the project will ever be finished is problematic
questionable may imply no more than the existence of doubt but usually suggests that the suspicions are well-grounded.
    • a man of questionable honesty

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