Abstruse, Apathetic, Arcane, Blind, Buried, Camouflaged, Catatonic, Censored, Classified, Close, Closed, Clouded, Concealed, Covered, Covert, Cryptic, Dark, Dead, Disguised, Dopey, Dormant, Dull, Eclipsed, Enigmatic, Esoteric, Flat, Foul, Groggy, Heavy, Hermetic, Hibernating, Hid, Hidden, Idle, Immature, Imperceptible, Inactive, Incommunicado, Inert, Insensible, Invisible, Languid, Languorous, Leaden, Lifeless, Lurking, Muffled, Mysterious, Mystic, Obfuscated, Obscure, Obscured, Occult, Passive, Phlegmatic, Possible, Potential, Quiescent, Recondite, Restricted, Secluded, Secret, Sedentary, Sequestered, Sightless, Slack, Sleeping, Sluggish, Slumbering, Smothered, Stagnant, Standing, Static, Stifled, Submerged, Suppressed, Suspended, Tame, Torpid, Ulterior, Unaroused, Underground, Underlying, Undisclosed, Unknown, Unnoticed, Unobserved, Unperceived, Unrevealed, Unripe, Unseen, Unspoken, Untold, Unutterable, Veiled, Virtual