questionableness

State of doubt

The quality of being open to doubt or suspicion.

Questionableness suggests something is not clearly legitimate, ethical, or true: The questionableness of his credentials raised concerns.

The word is formal and somewhat awkward; speakers more often use phrases like "questionable nature" or simply call something questionable.

doubt

dubiousness

Quality of being questionable

skepticism · wariness · misgivings · qualms · reservations · incredulity · disbelief · hesitation · apprehension · tentativeness

ethics

impropriety

Unsuitable or inappropriate behavior

unsavoriness · disreputability · dubiousness · suspiciousness · unscrupulousness · unethicalness · dishonesty · deceitfulness · untrustworthiness · corruptness

ambiguity

vagueness

Absence of precision

nebulousness · indefiniteness · imprecision · equivocation · unclearness · indistinctness · opacity · cloudiness · fuzziness · blurriness

scrutiny

examination

Methodical assessment or review

review · vetting · probing · fact-checking · verification · cross-examination · interrogation · challenge · contestation · disputation

Opposites
certainty/doubt

questionablenesscertainty

Total absence of doubt

certitude · sureness · unquestionableness · unquestionability · definiteness

trustworthiness/reliability

questionablenesstrustworthiness

Quality of being reliable

reliability · dependability · credibility · soundness · legitimacy

moral/ethical status

questionablenesstrustworthiness

Quality of being reliable

uprightness · propriety · honorableness · integrity · rectitude

Family

question, request, quest, questions, questioning, questionable, conquest, questioner, unquestionable

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