Abstract, Abstruse, Airy, Arcana, Arcane, Astral, Baffling, Befog, Black, Blacken, Blanket, Blind, Block, Bodiless, Brown, Buried, Bury, Cache, Camouflage, Canopy, Censored, Classified, Cloak, Close, Closed, Clothe, Cloud, Clouded, Conceal, Concealed, Confidence, Cope, Cover, Covered, Covert, Cowl, Dark, Darken, Deep, Dim, Disembodied, Disguise, Dissemble, Ditch, Dormant, Eclipse, Eclipsed, Eerie, Eeriness, Enigma, Enigmatic, Ensconce, Enshroud, Envelop, Esoteric, Esoterica, Ethereal, Psychic, Psychics, Puzzling, Recondite, Restricted, Screen, Scum, Secluded, Secret, Secrete, Sequestered, Shade, Shadow, Shadowy, Shield, Shroud, Shrouded, Sleeping, Smothered, Sorcery, Spiritual, Spirituality, Stifled, Submerged, Superhuman, Superimpose, Supernatural, Superpose, Suppressed, Transcendental, Ulterior, Underground, Underlying, Undisclosed, Unearthly, Unexplainable, Unexplained, Unfathomable, Unhuman, Unknown, Unphysical, Unrevealed, Unspoken, Unsubstantial, Extraterrestrial, Film, Ghostly, Gloom, Heavy, Hermetic, Hibernating, Hid, Hidden, Hide, Hood, Immaterial, Impalpable, Impenetrable, Imponderable, Incommunicado, Incomprehensible, Incorporate, Indecipherable, Inexplicable, Inscrutable, Insubstantial, Intangible, Latent, Lurking, Magical, Mantle, Mask, Miraculousness, Muffle, Muffled, Murk, Mysterious, Mystery, Mystic, Mystical, Mystifying, Obfuscate, Obfuscated, Obscure, Obscured, Overcast, Overlay, Overshadow, Perplexing, Phantom, Possible, Potential, Preternatural, Private, Privy, Profound, Untold, Unutterable, Unworldly, Vague, Varnish, Veil, Veiled, Virtual, Weird, Whitewash, Witchcraft, Witchery