356 entries under adjective topic. ×

5
inconceivable(extraordinary, unreasonable, amazing, doubtful)
5
perplexed(uncertain, doubtful, hesitant, unsure)
5
tricky(weak, delicate, loose, uncertain)
5
unassured(uncertain, nervous, dishonest, doubtful)
5
unbelieving(false, uncertain, dishonest, doubtful)
5
unconvincing(great, extraordinary, unreasonable, amazing)
5
unresolved(open, uncertain, doubtful, unsettled)
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unsound(false, loose, uncertain, unpredictable)
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unthinkable(extraordinary, amazing, incredible)
5
vacillating(uncertain, nervous, doubtful, unsettled)
5
weak(great, extraordinary, uncertain, nervous)
4
apocryphal(fake, uncertain, doubtful, questionable)
4
crazy(unusual, strange, ridiculous, unexpected)
4
deceptive(dishonest, unpredictable, unreliable, fickle)
4
disbelieving(uncertain, hesitant, suspicious, wary)
4
erratic(weak, unusual, strange, loose)
4
evasive(uncertain, dishonest, doubtful, vague)
4
false(dishonest, deceitful, unpredictable, unreliable)
4
faltering(uncertain, hesitant, unsure, unfaithful)
4
flimsy(extraordinary, unreasonable, amazing, doubtful)
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APASmart Define. (2016). dubious thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/dubious/thesaurus/synonyms
ChicagoSmart Define. 2016. "dubious thesaurus" https://smartdefine.org/dubious/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, dubious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/dubious/thesaurus/synonyms>.
MLASmart Define. "dubious thesaurus" 4 March 2016. Web. 25 September 2026. <https://smartdefine.org/dubious/thesaurus/synonyms>