119 entries under adjective topic. ×

36
secret(quiet, show, dishonest, deceitful)
26
covert(show, secret, private, restricted)
20
furtive(secret, sly, sneaky, secretive)
20
surreptitious(dishonest, deceitful, secret, hidden)
20
hidden(verb, secret, sly, underground)
17
undercover(adverb, show, dishonest, secret)
17
concealed(obscure, secret, unknown, hidden)
15
private(intimate, secret, unknown, hidden)
15
stealthy(quiet, dishonest, secret, hidden)
15
underhand(deceitful, secret, sly, sneaky)
14
hush-hush(adverb, show, informal, dishonest)
11
confidential(special, intimate, secret, hidden)
11
underground(secret, unknown, hidden, sly)
10
cryptic(secret, unknown, hidden, concealed)
10
hole-and-corner(secret, private, hidden, spy)
10
hugger-mugger(quiet, intriguing)
10
sneaky(quiet, dishonest, deceitful, secret)
9
secretive(secret, sneaky, stealthy)
8
arcane(secret, hidden, underground, undisclosed)
7
privy(special, intimate, secret, hidden)
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APASmart Define. (2015). clandestine thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/clandestine/thesaurus/synonyms
ChicagoSmart Define. 2015. "clandestine thesaurus" https://smartdefine.org/clandestine/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, clandestine thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/clandestine/thesaurus/synonyms>.
MLASmart Define. "clandestine thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/clandestine/thesaurus/synonyms>