1
cloak-and-dagger work
1
cloaked(secret, unknown, hidden, concealed, underhanded)
1
close-mouthed
1
closed
1
closed-door
1
clouded(secret, unknown, hidden, underground, concealed)
1
covered(secret, unknown, hidden, underground, concealed)
1
crafty(adjective, dishonest, cunning, deceitful, sneaky)
1
crooked(dishonest, cunning, deceitful, sneaky, underhanded)
1
cunning(false, dishonest, deceitful, artful, deceptive)
1
discreet(special, intimate, personal, underground, undisclosed)
1
disguised(secret, unknown, hidden, concealed, underhanded)
1
disorderly
1
dissembled(secret, hidden, underground, undisclosed, underhanded)
1
double-crossing(dishonest, cunning, deceitful, sneaky, underhanded)
1
duplicitous(dishonest, cunning, deceitful, sneaky, underhanded)
1
furtively(adverb, secretly, slyly, underhandedly, surreptitiously)
1
guileful(false, dishonest, cunning, deceitful, artful)
1
hidlings
1
huggermugger(adjective, show, secret)
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APASmart Define. (2015). clandestine thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/clandestine/thesaurus/synonyms
ChicagoSmart Define. 2015. "clandestine thesaurus" https://smartdefine.org/clandestine/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, clandestine thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/clandestine/thesaurus/synonyms>.
MLASmart Define. "clandestine thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/clandestine/thesaurus/synonyms>