restricted (adj.)
- arcane
- authoritative
- bound
- bounded
- cabalistic
- censored
- circumscribed
- classified
- cloistered
- close
- close-fitting
- closed
- concealed
- conditioned
- confined
- constricted
- copyrighted
- cramped
- crowded
- cryptic
- dark
- determinate
- disciplined
- enclosed
- enigmatic
- esoteric
- expert
- featured
- finite
- fixed
- hedged
- hermetic
- hidden
- hush-hush
- icebound
- incommodious
- isthmian
- knowledgeable
- landlocked
- latent
- leavened
- limited
- meager
- mitigated
- moderated
- modified
- modulated
- mysterious
- narrow
- near
- occult
- patented
- pent
- pent-up
- precise
- prescribed
- proscribed
- qualified
- scant
- scanty
- seasoned
- secret
- shut-in
- slender
- smothered
- snowbound
- softened
- specialistic
- specialized
- stifled
- stinted
- strait
- suppressed
- technical
- tempered
- tight
- ulterior
- undisclosed
- unrevealed
- unspoken
- untellable
- untold
- unutterable
- unuttered