6
calculating(adjective, mean, dishonest, deceitful, sly)
6
crooked(adjective, mean, bad, smooth, wrong)
6
double-dealing(adjective, mean, smooth, smart, false)
6
mean(verb, adjective, smooth, smart, low)
6
sharp(adjective, mean, bad, smooth, wrong)
5
astute(adjective, mean, smooth, cunning, sly)
5
backstairs(adjective, clandestine, underground, undisclosed)
5
canny(adjective, mean, smooth, sly)
5
doubtful(adjective, informal, shaky, dubious, unclear)
5
hugger-mugger(adjective, quiet, intriguing)
5
snide(adjective, false, dishonest, misleading, sly)
4
bad(adjective, wrong, immoral, unprincipled)
4
corrupt(adjective, bad, wrong, false, dishonest)
4
cowardly(adjective, dishonest, underhanded)
4
cute
4
insincere(adjective, false, dishonest, cunning, deceitful)
4
plotting(adjective, mean, smooth, sly)
4
quiet(adjective, intriguing)
4
roguish(adjective, mean, smooth, false, dishonest)
4
serpentine(adjective, false, ambiguous, misleading, rambling)
11 years ago|10k views|share |citing 
APASmart Define. (2015). sneaky thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sneaky/thesaurus/synonyms
ChicagoSmart Define. 2015. "sneaky thesaurus" https://smartdefine.org/sneaky/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, sneaky thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sneaky/thesaurus/synonyms>.
MLASmart Define. "sneaky thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/sneaky/thesaurus/synonyms>