sinister, mysterious, malevolent, shady, nefarious, ghostly, murky, secretive, faceless, clandestine, tenebrous, tentacular, enigmatic, cabalistic, mercenary, dark, devilish, demonic, villainous, murderous, bodiless, conspiratorial, unseen, necromantic, furtive, devious, freebooting, labyrinthine, vigilante, seedy, disreputable, spidery, covert, unnamable, nameless, megalomanic, militant, seamiest, femmes fatales, luciferian, crooked, inscrutable, sleazy, hooded, ghostlike, cloaked, demoniacal, loosely knit, multiheaded, phantasmal, opaque, supersecret, supernatural, batlike, cowled, eldritch, jihadi, mystical, diabolical, holmesian, nebulous, amorphous, stygian, yakuza, ghoulish, unsavory, wraithlike, amoral, vampiric, depthless, psychopathic, praetorian, mazelike, dodgier, mephistophelean, venal, subversive, dostoyevskian, mystic, hugger mugger, extremist, stealthy, drug lord, cultic, sub rosa, interdimensional, disembodied, grouplet, snakelike, subterranean, unquiet, irangate, sepulchral, creepy, unscrupulous, phantasmagoric, apparitional, grimy, corrupt, lone wolf, ragtag, mythic, natural, fraught, misty, stony, dread, empirical, grand, near, pleasing, simple, soft, tender, tranquil, ancient, arid, barren, close, cloudy, dear, descend, dim, shadowed, shrouded, blurry, hazy, twilit, blurred, dusky, featureless, sombre, unmoving, unreal, insubstantial, gloomy, haunted

faint, indistinct, shaded, umbrageous, unsubstantial, vague, wispy