65 entries under dark topic. ×

59
concealed(verb, adjective, quiet, cover, show)
43
secret(adjective, close, quiet, show, separate)
23
covert(adjective, show, obscure, secret)
23
obscure(adjective, quiet, cover, hard, difficult)
21
occult(noun, adjective, evil, obscure)
18
cryptic(adjective, cover, evil, obscure, difficult)
16
mystic(adjective, evil, obscure, solid)
16
invisible(adjective, adverb, obscure, superior)
13
obscured(verb, adjective, cover, show, separate)
13
unknown(adjective, obscure, superior, strange)
12
undisclosed(adjective, cover, obscure, secret)
8
privy(adjective, cover, separate, obscure)
8
shrouded(adjective, obscure, secret, clandestine)
6
undivulged(cover, obscure, equivocal, ulterior)
5
enigmatic(adjective, cover, hard, evil, obscure)
5
remote(adjective, close, quiet, cover, separate)
5
under cover(expression, adjective, idiom, cover, show)
5
unfathomable(adjective, hard, obscure, difficult, solid)
5
unknowable(adjective, obscure, solid, superior)
4
impenetrable(adjective, obscure, difficult, solid)
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APASmart Define. (2015). hidden thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/hidden/thesaurus/synonyms
ChicagoSmart Define. 2015. "hidden thesaurus" https://smartdefine.org/hidden/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, hidden thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/hidden/thesaurus/synonyms>.
MLASmart Define. "hidden thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/hidden/thesaurus/synonyms>