64 entries under unknown topic. ×

1
recondite(obscure, dark, secret, hidden)
1
reticent(obscure, clandestine, underground, unrevealed)
1
retired(obscure, personal, clandestine, underground)
1
screened(obscure, dark, hidden, imperceptible)
1
secluded(obscure, dark, hidden, concealed)
1
sequestered(obscure, dark, secret, hidden)
1
shadowy(obscure, dark, secret, hidden)
1
shrouded(cover, obscure, dark, hidden)
1
unacknowledged(clandestine, underground, nameless)
1
undercover(secret, hidden, underground, concealed)
1
unintelligible(obscure, clandestine, underground, concealment)
1
veiled(obscure, hidden, imperceptible, concealed)
1
withheld(obscure, dark, secret, hidden)
0
backdoor(obscure, clandestine, underground, unrevealed)
0
camouflaged(obscure, clandestine, underground, unrevealed)
0
cloak-and-dagger(obscure, clandestine, underground, unrevealed)
0
cloak and dagger(expression, idiom, obscure, unrevealed)
0
closet(obscure, personal, clandestine, underground)
0
conspiratorial(obscure, clandestine, underground, unrevealed)
0
enigmatical(obscure, clandestine, underground, unrevealed)
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APASmart Define. (2015). undisclosed thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/undisclosed/thesaurus/synonyms
ChicagoSmart Define. 2015. "undisclosed thesaurus" https://smartdefine.org/undisclosed/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, undisclosed thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/undisclosed/thesaurus/synonyms>.
MLASmart Define. "undisclosed thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/undisclosed/thesaurus/synonyms>