45 entries under sly topic. ×

21
furtive(adjective, honest, secret, concealment)
16
secret(adjective, quiet, mean, smooth, obscure)
15
clandestine(adjective, secret, sneaky, stealthy)
9
underhand(adjective, deceitful, secret, concealment)
6
evasive(adjective, obscure, reserved, reticent, wary)
5
elusive(adjective, mean, smooth, sneaky)
3
devious(adjective, dishonest, cunning, deceitful)
2
deceitful(adjective, mean, smooth, dishonest)
2
foxy(adjective, mean, smooth, sneaky)
1
artful(adjective, mean, smooth, sneaky)
1
calculating(adjective, mean, smooth, devious)
1
crooked(mean, smooth, dishonest, cunning, deceitful)
1
deceptive(adjective, mean, smooth, dishonest, cunning)
1
designing(adjective, mean, smooth)
1
dishonorable(mean, smooth, dishonest, cunning, deceitful)
1
double-dealing(adjective, mean, smooth, devious)
1
duplicitous(dishonest, cunning, deceitful, devious)
1
indirect(dishonest, cunning, deceitful, devious)
1
plotting(adjective, mean, smooth, devious)
1
scheming(adjective, mean, smooth, corrupt)
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APASmart Define. (2015). secretive thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/secretive/thesaurus/synonyms
ChicagoSmart Define. 2015. "secretive thesaurus" https://smartdefine.org/secretive/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, secretive thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/secretive/thesaurus/synonyms>.
MLASmart Define. "secretive thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/secretive/thesaurus/synonyms>