17
sly(adjective, false, dishonest, deceitful, secret)
13
underhand(adjective, honest, false, dishonest, cunning)
11
corrupt(adjective, mean, bad, base, false)
11
deceitful(adjective, false, corrupt, dishonest, cunning)
11
false(adjective, mean, base, dishonest, cunning)
10
crafty(adjective, false, dishonest, cunning, deceitful)
10
dishonest(adjective, false, corrupt, dishonest, immoral)
10
wily(adjective, false, dishonest, cunning, deceitful)
9
crooked(adjective, mean, base, false, corrupt)
9
sneaky(adjective, honest, false, corrupt, dishonest)
8
cunning(adjective, false, dishonest, deceitful, lying)
8
devious(adjective, mean, bad, honest, base)
8
disingenuous(adjective, honest, false, dishonest, cunning)
8
duplicitous(adjective, mean, honest, base, false)
8
furtive(adjective, dishonest, cunning, deceitful, unpredictable)
8
guileful(adjective, honest, false, dishonest, cunning)
8
shifty(adjective, honest, false, corrupt, dishonest)
8
sinister(adjective, false, unreasonable, dishonest, immoral)
8
treacherous(adjective, mean, base, false, dishonest)
8
tricky(adjective, false, dishonest, cunning, deceitful)
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APASmart Define. (2016). underhanded thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/underhanded/thesaurus/synonyms
ChicagoSmart Define. 2016. "underhanded thesaurus" https://smartdefine.org/underhanded/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, underhanded thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/underhanded/thesaurus/synonyms>.
MLASmart Define. "underhanded thesaurus" 22 January 2016. Web. 20 September 2026. <https://smartdefine.org/underhanded/thesaurus/synonyms>