10
underhanded(adjective, honest, false, corrupt, dishonest)
10
guileful(adjective, mean, smooth, smart, honest)
10
indirect(adjective, honest, false, dishonest, deceitful)
10
scheming(adjective, dishonest, cunning, deceitful, sly)
10
secretive(adjective, honest, dishonest, secret, clandestine)
10
shrewd(adjective, mean, dishonest, cunning, deceitful)
9
duplicitous(adjective, honest, dishonest, deceitful, untrustworthy)
9
clandestine(adjective, quiet, dishonest, deceitful, secret)
9
disingenuous(adjective, honest, false, dishonest, cunning)
9
unscrupulous(adjective, mean, bad, smooth, wrong)
9
untrustworthy(adjective, false, dishonest, cunning, deceitful)
8
designing(adjective, mean, smooth, smart, false)
8
false(adjective, dishonest, cunning, deceitful, lying)
8
sneak(adjective, clandestine, underground, undisclosed)
7
covert(adjective, quiet, mean, secret, sly)
7
fraudulent(adjective, false, corrupt, dishonest, cunning)
7
skulking(adjective, secret, private, hidden, covert)
7
slick(adjective, mean, false, dishonest, cunning)
7
two-faced(adjective, bad, wrong, false, dishonest)
6
base(adjective, low, corrupt, dishonest, crooked)
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APASmart Define. (2015). sneaky thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sneaky/thesaurus/synonyms
ChicagoSmart Define. 2015. "sneaky thesaurus" https://smartdefine.org/sneaky/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, sneaky thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sneaky/thesaurus/synonyms>.
MLASmart Define. "sneaky thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/sneaky/thesaurus/synonyms>