undisclosed (adj.)
- able
- arcane
- cabalistic
- censored
- classified
- close
- closed
- concealed
- cryptic
- dark
- enigmatic
- esoteric
- hermetic
- hidden
- hush-hush
- incalculable
- incognizable
- invisible
- latent
- mysterious
- occult
- puzzling
- restricted
- sealed
- secret
- smothered
- stifled
- strange
- suppressed
- ulterior
- unapparent
- unbeknown
- uncharted
- unclassified
- undetected
- undiscoverable
- undiscovered
- unexplained
- unexplored
- unfamiliar
- unfathomed
- unheard
- unheard-of
- unidentified
- unknowable
- unknown
- unperceived
- unplumbed
- unrevealed
- unseen
- unsolved
- unspoken
- unsuspected
- untellable
- untold
- untouched
- untracked
- unutterable
- unuttered
- virgin
