40 entries under covert topic. ×

2
underneath(secret, hidden, spy)
1
cautious(adjective, sneaky, secretive)
1
cloaked(secret, unknown, hidden, concealed, underhanded)
1
crafty(adjective, dishonest, cunning, deceitful, sneaky)
1
disguised(secret, unknown, hidden, concealed, underhanded)
1
masked(secret, unknown, hidden, concealed, underhanded)
1
stealth(noun, secret, hidden, spy)
1
sub-rosa(dishonest, cunning, deceitful, secret, sneaky)
1
tricky(dishonest, cunning, deceitful, sneaky, underhanded)
1
unauthorized(secret, private, hidden, sneaky)
1
under cover(expression, adjective, secret, spy)
1
wily(dishonest, cunning, deceitful, sneaky, underhanded)
0
calculating(sneaky, secretive)
0
circumspect(sneaky, secretive)
0
creep(secret, hidden, spy)
0
elusive(sneaky, secretive)
0
intelligence(secret, hidden, spy)
0
obscured(secret, hidden, underground, concealed, underhanded)
0
scheming(sneaky, secretive)
0
spy(secret, hidden)
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APASmart Define. (2015). clandestine thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/clandestine/thesaurus/synonyms
ChicagoSmart Define. 2015. "clandestine thesaurus" https://smartdefine.org/clandestine/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, clandestine thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/clandestine/thesaurus/synonyms>.
MLASmart Define. "clandestine thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/clandestine/thesaurus/synonyms>