questionability

State of being suspect

Questionability is the quality of being open to doubt or challenge.

Something with questionability invites scrutiny—its truth, validity, or appropriateness isn't settled: The questionability of his motives made everyone uneasy.

The word is formal and somewhat awkward; speakers more often say "questionable nature" or simply use questionable as an adjective.

doubt

suspicion

Sense of unease about motives

misgivings · reservation · hesitation · wariness · incredulity · uncertainty · dubiousness · qualms · apprehension · unease

ambiguity

vagueness

Absence of precision

imprecision · obscurity · equivocality · unclearness · fuzziness · murkiness · nebulousness · haziness · opacity · borderline

scrutiny

examination

Methodical assessment or review

review · audit · inquiry · probe · evaluation · assessment · verification · fact-checking · cross-examination · vetting

credibility

trustworthiness

Quality of being reliable

veracity · believability · integrity · accuracy · legitimacy · soundness · plausibility · substantiation · verification · corroboration

Opposites
epistemic certainty

questionabilitycertainty

Total absence of doubt

certitude · unquestionability · definiteness · assuredness · conclusiveness

trustworthiness/credibility

questionabilitycredibility

Quality inspiring trust

reliability · trustworthiness · dependability · believability · authenticity

moral/ethical status

questionabilityunimpeachability

Freedom from valid criticism

irreproachability · legitimacy · validity · defensibility · propriety

Family

question, request, quest, questions, questioning, inquisitive, questionable, requested, questioned

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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G