2
alleged(supposed, unproven)
2
amorphous(unclear, indistinct, indistinguishable)
2
at issue(adjective, idiom, clear, certain)
2
atheistic
2
beyond belief(expression, extraordinary, amazing, incredible)
2
blurred(unclear, indistinct, indistinguishable)
2
capricious(adjective, weak, false, loose, uncertain)
2
cautious
2
changeable(adjective, unusual, uncertain, unstable, dishonest)
2
confused(adjective, uncertain, unsettled, vague, hesitant)
2
confusing(uncertain, vague, unclear, ambiguous, misleading)
2
contemptible(adjective, disreputable)
2
corrupt
2
criminal
2
dangerous(adjective, delicate, uncertain, unstable, doubtful)
2
deceitful(adjective, false, corrupt, dishonest, unpredictable)
2
delusive(adjective, unpredictable, fickle, variable, undependable)
2
difficult(adjective, tricky, risky, hazardous, sticky)
2
dodgy(adjective, dishonest, unreliable, suspect, untrustworthy)
2
fair-weather(adjective, dishonest, deceitful, unreliable, insecure)
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APASmart Define. (2016). dubious thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/dubious/thesaurus/synonyms
ChicagoSmart Define. 2016. "dubious thesaurus" https://smartdefine.org/dubious/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, dubious thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/dubious/thesaurus/synonyms>.
MLASmart Define. "dubious thesaurus" 4 March 2016. Web. 22 September 2026. <https://smartdefine.org/dubious/thesaurus/synonyms>