52 entries under clandestine topic. ×

27
furtive(adjective, honest, dishonest, deceitful, secret)
24
stealthy(adjective, quiet, dishonest, secret, sly)
23
secret(adjective, dishonest, deceitful, hidden, sly)
20
covert(adjective, secret, hidden, sly)
20
underhand(adjective, dishonest, deceitful, secret, sly)
15
hidden(verb, adjective, secret, underground)
13
private(adjective, secret, unknown, hidden)
12
secretive(adjective, mean, smooth, honest, dishonest)
11
concealed(adjective, dishonest, cunning, secret, hidden)
11
sneak(adjective, underground, undisclosed)
8
underhanded(adjective, dishonest, cunning, deceitful, crafty)
7
backstairs(adjective, underground, undisclosed)
7
cloak-and-dagger(adjective, full, secret, underground)
6
confidential(adjective, secret, hidden, spy)
5
under-the-table(adjective, secret, hidden, sneaky)
5
veiled(adjective, secret, unknown, hidden)
4
ambiguous(obscure, underground, undisclosed)
4
close(secret, unknown, hidden, concealed)
4
disguised(deception, secret, unknown, hidden)
4
reticent(underground, undisclosed, concealment)
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APASmart Define. (2015). surreptitious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/surreptitious/thesaurus/synonyms
ChicagoSmart Define. 2015. "surreptitious thesaurus" https://smartdefine.org/surreptitious/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, surreptitious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/surreptitious/thesaurus/synonyms>.
MLASmart Define. "surreptitious thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/surreptitious/thesaurus/synonyms>