529 entries under adjective topic. ×

3
unassured(dishonest, deceitful, unpredictable, unreliable)
3
unctuous(false, deceitful, lying, untruthful)
3
unethical(low, dishonest, immoral, cunning)
3
unloyal(false, dishonest, dubious, unsound)
3
venomous(dangerous, malevolent)
3
venturesome(bad, delicate, heavy, uncertain)
2
adventurous
2
atrocious
2
counterfeit(fake, false, dishonest, cunning)
2
deadly(tricky, dangerous, ethal, Ethal)
2
explosive(insecure, risky, dangerous, provocative)
2
fallible(unpredictable, unreliable, fickle, variable)
2
falsehearted(mean, bad, evil, low)
2
fibbing(wrong, false, dishonest, deceitful)
2
filthy(unpleasant, horrible, disagreeable, dreadful)
2
fly by night(unreliable, insecure, incalculable)
2
formidable(bad, hard, evil, rough)
2
forsworn(mean, bad, base, false)
2
going for broke(expression, idiom, delicate, uncertain)
2
grave(unpleasant, horrible, disagreeable, dreadful)
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APASmart Define. (2016). treacherous thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/treacherous/thesaurus/synonyms
ChicagoSmart Define. 2016. "treacherous thesaurus" https://smartdefine.org/treacherous/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, treacherous thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/treacherous/thesaurus/synonyms>.
MLASmart Define. "treacherous thesaurus" 4 March 2016. Web. 29 September 2026. <https://smartdefine.org/treacherous/thesaurus/synonyms>