16
untrue(adjective, continue, fake, false, dishonest)
16
unscrupulous(adjective, mean, hard, smooth, evil)
16
wicked(adjective, mean, bad, severe, rough)
15
dangerous(adjective, hard, severe, evil, rough)
15
two-faced(adjective, mean, wrong, base, false)
14
shifty(adjective, mean, smooth, wrong, smart)
14
cunning(adjective, mean, smooth, smart, false)
14
devious(adjective, mean, fake, base, false)
14
duplicitous(adjective, mean, fake, base, false)
14
precarious(adjective, delicate, uncertain, sensitive, unstable)
14
sly(adjective, false, dishonest, cunning, deceitful)
14
treasonous(adjective, fickle, untrustworthy, unprincipled, disloyal)
14
unsafe(adjective, delicate, uncertain, sensitive, dishonest)
13
undependable(adjective, false, dishonest, deceitful, unpredictable)
13
unstable(adjective, uncertain, dishonest, shaky, unpredictable)
13
wily(adjective, mean, smooth, smart, false)
12
fraudulent(adjective, fake, false, corrupt, dishonest)
12
insecure(adjective, unreliable, dangerous, incalculable)
12
insincere(adjective, false, dishonest, cunning, deceitful)
12
lying(adjective, false, corrupt, dishonest, cunning)
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APASmart Define. (2016). treacherous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/treacherous/thesaurus/synonyms
ChicagoSmart Define. 2016. "treacherous thesaurus" https://smartdefine.org/treacherous/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, treacherous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/treacherous/thesaurus/synonyms>.
MLASmart Define. "treacherous thesaurus" 4 March 2016. Web. 26 September 2026. <https://smartdefine.org/treacherous/thesaurus/synonyms>