52 entries under hidden topic. ×

4
sneaking(adjective, dishonest, cunning, deceitful, secret)
4
under wraps(expression, adjective, idiom, adverb, show)
4
unrevealed(adjective, secret, unknown, concealed)
3
mystic(adjective, secret, unknown, underground)
2
buried(adjective, secret, unknown, concealed)
2
camouflaged(adjective, secret, underground, undisclosed)
2
esoteric(adjective, secret, unknown, underground)
2
incognito(secret, spy, underground, undisclosed)
2
mysterious(adjective, quiet, secret, unknown)
2
obscure(adjective, secret, unknown, underground)
2
recondite(adjective, secret, unknown, underground)
2
secluded(adjective, secret, unknown, personal)
2
slinking(secret, private, sneak, sneaky)
2
under-the-table(secret, private, underground, sneaky)
2
underneath(secret, spy, covert)
2
undisclosed(adjective, secret, unknown, personal)
2
unknown(adjective, secret, underground, concealed)
2
unseen(secret, unknown, underground, concealed)
1
abstruse(secret, unknown, underground, concealed)
1
cloaked(secret, unknown, concealed, underhanded)
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APASmart Define. (2015). clandestine thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/clandestine/thesaurus/synonyms
ChicagoSmart Define. 2015. "clandestine thesaurus" https://smartdefine.org/clandestine/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, clandestine thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/clandestine/thesaurus/synonyms>.
MLASmart Define. "clandestine thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/clandestine/thesaurus/synonyms>