3
incalculable(adjective, unreliable, insecure, treacherous)
3
inconclusive(adjective, clear, certain, uncertain, doubtful)
3
legendary(adjective, mythical, fabled, mythological)
3
louche(adjective, disreputable)
3
marginal
3
nefarious(adjective, disreputable)
3
oddball(adjective, unusual, strange, irregular, unpredictable)
3
outlandish(adjective, extraordinary, unusual, strange, amazing)
3
peculiar(adjective, unusual, strange, irregular, odd)
3
perilous(adjective, delicate, uncertain, unstable, doubtful)
3
questioning(adjective, uncertain, nervous, doubtful, unsettled)
3
refutable
3
suss(adjective, unreliable, insecure, treacherous, incalculable)
3
tottery(adjective, unstable)
3
underhand(adjective, evil, corrupt, dishonest, irregular)
3
unethical
3
unpromising
3
untrusting
3
wobbly(adjective, uncertain, nervous, unstable, doubtful)
2
Delphic(nervous, insecure, unsure)
10 years ago|38k views|share |citing 
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>