1
screened(obscure, dark, unknown, hidden, imperceptible)
1
secluded(obscure, dark, unknown, hidden, concealed)
1
secret partner
1
secretive(adjective, clandestine, underground)
1
sequestered(obscure, dark, secret, unknown, hidden)
1
shadowy(obscure, dark, secret, unknown, hidden)
1
shrouded(cover, obscure, dark, unknown, hidden)
1
smothered
1
solitary(personal, confidential, hush-hush)
1
stifled
1
tacit
1
unacknowledged(unknown, clandestine, underground, nameless)
1
unapparent
1
unapprehended
1
unascertained
1
unbeknown
1
unbreatheable
1
unbreathed
1
uncharted
1
unclassified
11 years ago|5.2k views|share |citing 
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>