44 entries under hidden topic. ×

24
clandestine(adjective, dishonest, deceitful, secret)
23
secret(adjective, dishonest, deceitful, sly)
20
covert(adjective, secret, sly, clandestine)
17
undercover(adjective, dishonest, secret, spy)
14
hush-hush(adjective, dishonest, secret, sneaky)
13
private(adjective, secret, unknown, clandestine)
13
underground(adjective, secret, unknown, concealed)
11
concealed(adjective, dishonest, cunning, secret)
11
hole-and-corner(adjective, secret, spy, sneaky)
6
confidential(adjective, secret, spy, clandestine)
6
occult(noun, secret, unknown, underground)
5
under-the-table(adjective, secret, clandestine, sneaky)
5
undisclosed(adjective, secret, unknown, concealed)
5
veiled(adjective, secret, unknown, clandestine)
4
close(secret, unknown, clandestine, concealed)
4
disguised(deception, secret, unknown, clandestine)
4
esoteric(secret, unknown, underground, concealed)
4
mystic(adjective, secret, unknown, underground)
4
secluded(adjective, secret, unknown, underground)
4
stealth(noun, secret, spy, covert)
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APASmart Define. (2015). surreptitious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/surreptitious/thesaurus/synonyms
ChicagoSmart Define. 2015. "surreptitious thesaurus" https://smartdefine.org/surreptitious/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, surreptitious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/surreptitious/thesaurus/synonyms>.
MLASmart Define. "surreptitious thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/surreptitious/thesaurus/synonyms>