150 entries under adjective topic. ×

33
sneaky(move, honest, dishonest, deceitful)
29
stealthy(move, quiet, dishonest, cunning)
26
underhand(mean, smooth, smart, dishonest)
26
secret(dishonest, deceitful, secret, hidden)
25
sly(honest, dishonest, cunning, deceitful)
21
surreptitious(honest, dishonest, deceitful, secret)
19
clandestine(secret, sly, sneaky, secretive)
19
covert(secret, reticent, unknown, sly)
17
secretive(honest, secret, concealment, sneaky)
15
hidden(verb, strange, secret, clandestine)
15
cunning(mean, smooth, dishonest, deceitful)
14
shifty(mean, smooth, smart, dishonest)
13
insidious(mean, smooth, dishonest, deceitful)
13
undercover(dishonest, secret, reticent, hidden)
9
crafty(mean, informal, dishonest, deceitful)
9
wily(mean, smooth, dishonest, deceitful)
9
deceitful(mean, smooth, smart, dishonest)
9
skulking(secret, private, hidden, concealment)
9
sneak(close, clandestine, underground, undisclosed)
8
foxy(mean, smooth, dishonest, sly)
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APASmart Define. (2015). furtive thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/furtive/thesaurus/synonyms
ChicagoSmart Define. 2015. "furtive thesaurus" https://smartdefine.org/furtive/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, furtive thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/furtive/thesaurus/synonyms>.
MLASmart Define. "furtive thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/furtive/thesaurus/synonyms>