54
deceitful(adjective, mean, smooth, wrong, fake)
45
dishonest(adjective, mean, smooth, wrong, fake)
41
perfidious(adjective, mean, hard, wrong, continue)
35
untrustworthy(adjective, mean, base, false, dishonest)
34
false(adjective, mean, wrong, continue, fake)
33
disloyal(adjective, mean, continue, base, false)
31
traitorous(adjective, mean, smooth, continue, smart)
30
faithless(adjective, mean, continue, base, false)
29
insidious(adjective, false, dishonest, deceitful, unreliable)
26
unreliable(adjective, wrong, false, true, unstable)
26
unfaithful(adjective, mean, continue, base, false)
25
deceptive(adjective, mean, smooth, wrong, fake)
24
hypocritical(adjective, mean, bad, base, false)
21
slippery(adjective, informal, false, uncertain, dishonest)
21
tricky(adjective, mean, smooth, wrong, fake)
21
crooked(adjective, mean, smooth, fake, smart)
18
underhand(adjective, mean, smooth, smart, false)
18
double-dealing(adjective, mean, smooth, wrong, fake)
16
corrupt(adjective, mean, bad, low, base)
16
crafty(adjective, mean, smooth, fake, smart)
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APASmart Define. (2016). treacherous thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/treacherous/thesaurus/synonyms
ChicagoSmart Define. 2016. "treacherous thesaurus" https://smartdefine.org/treacherous/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, treacherous thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/treacherous/thesaurus/synonyms>.
MLASmart Define. "treacherous thesaurus" 4 March 2016. Web. 20 September 2026. <https://smartdefine.org/treacherous/thesaurus/synonyms>