350 entries under adjective topic. ×

5
underhand(false, dishonest, cunning, deceitful)
5
unsound(wrong, false, loose, uncertain)
5
untruthful(wrong, false, dishonest, cunning)
4
cheating(false, dishonest, cunning, deceitful)
4
deceptive(mean, bad, weak, wrong)
4
foxy
4
immoral(careless, foolish, corrupt, dishonest)
4
irresolute(uncertain, nervous, doubtful, hesitant)
4
knavish(false, dishonest, immoral, cunning)
4
underhanded(mean, bad, base, false)
4
unpredictable(weak, careless, loose, foolish)
4
unprincipled(low, false, dishonest, immoral)
4
wavering(uncertain, nervous, dishonest, doubtful)
4
weak(uncertain, nervous, sensitive, doubtful)
4
wily(false, dishonest, cunning, deceitful)
3
artful
3
base(mean, bad, dishonest, immoral)
3
counterfeit(false, dishonest, cunning, artful)
3
designing(false, dishonest, cunning, deceitful)
3
despicable(shameful, disgraceful, disreputable)
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APASmart Define. (2016). untrustworthy thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/untrustworthy/thesaurus/synonyms
ChicagoSmart Define. 2016. "untrustworthy thesaurus" https://smartdefine.org/untrustworthy/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, untrustworthy thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/untrustworthy/thesaurus/synonyms>.
MLASmart Define. "untrustworthy thesaurus" 14 March 2016. Web. 30 September 2026. <https://smartdefine.org/untrustworthy/thesaurus/synonyms>