62 entries under clandestine topic. ×

36
hidden(verb, adjective, show, obscure, dark)
36
secret(adjective, quiet, show, secret, hidden)
32
concealed(adjective, show, dark, secret, unknown)
20
private(adjective, close, quiet, secret, hidden)
17
surreptitious(adjective, secret, hidden, sly)
17
furtive(adjective, secret, reticent, unknown, sly)
15
hush-hush(adjective, show, informal, secret, hidden)
15
veiled(adjective, secret, unknown, hidden)
15
undercover(adjective, show, secret, reticent, hidden)
14
stealthy(adjective, quiet, secret, hidden, sly)
11
ulterior(adjective, show, secret, hidden)
11
underhand(adjective, mean, secret, hidden, sly)
10
disguised(adjective, secret, hidden, imperceptible)
10
privy(adjective, obscure, dark, secret, hidden)
8
buried(adjective, show, obscure, secret, hidden)
8
camouflaged(adjective, obscure, secret, hidden)
8
cloaked(adjective, obscure, secret, unknown, hidden)
8
masked(adjective, secret, hidden, imperceptible)
7
confidential(adjective, close, quiet, separate, secret)
7
obscured(adjective, show, secret, hidden)
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APASmart Define. (2015). covert thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/covert/thesaurus/synonyms
ChicagoSmart Define. 2015. "covert thesaurus" https://smartdefine.org/covert/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, covert thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/covert/thesaurus/synonyms>.
MLASmart Define. "covert thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/covert/thesaurus/synonyms>