111 entries under dubious topic. ×

7
disreputable(adjective, low, false, immoral, deceitful)
7
fraudulent(adjective, false, dishonest, immoral, cunning)
7
insecure(adjective, uncertain, nervous, doubtful)
7
lying(adjective, bad, false, dishonest, cunning)
6
capricious(adjective, weak, careless, loose, foolish)
6
cunning(adjective, false, dishonest, deceitful, lying)
6
duplicitous(adjective, mean, bad, base, false)
6
mendacious(adjective, false, dishonest, cunning, deceitful)
6
unassured(adjective, uncertain, nervous, dishonest, doubtful)
5
iffy(adjective, uncertain, nervous, doubtful)
5
inconstant(adjective, false, dishonest, immoral)
5
underhand(adjective, false, dishonest, cunning, deceitful)
5
untruthful(adjective, wrong, false, dishonest, cunning)
4
irresolute(adjective, uncertain, nervous, doubtful, hesitant)
4
unpredictable(adjective, weak, careless, loose, foolish)
4
unprincipled(adjective, low, false, dishonest, immoral)
4
wavering(adjective, uncertain, nervous, dishonest, doubtful)
4
weak(adjective, uncertain, nervous, sensitive, doubtful)
4
wily(adjective, false, dishonest, cunning, deceitful)
3
debatable(uncertainty, uncertain, doubtful, suspect)
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APASmart Define. (2016). untrustworthy thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/untrustworthy/thesaurus/synonyms
ChicagoSmart Define. 2016. "untrustworthy thesaurus" https://smartdefine.org/untrustworthy/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, untrustworthy thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/untrustworthy/thesaurus/synonyms>.
MLASmart Define. "untrustworthy thesaurus" 14 March 2016. Web. 1 October 2026. <https://smartdefine.org/untrustworthy/thesaurus/synonyms>