Absurd, Aimless, Airy, Apish, Arid, Asinine, Awkward, Bare, Barren, Batty, Beguiled, Besotted, Blah, Bland, Blank, Bleached, Bloodless, Bootless, Brainless, Callow, Calm, Characterless, Clear, Cockeyed, Cold, Counterproductive, Crazy, Credulous, Cuckoo, Daffy, Daft, Dazed, Dead, Devoid, Dilute, Diluted, Doting, Dotty, Dreary, Dry, Dull, Dumb, Dusty, Effete, Elephantine, Empty, Fade, Senseless, Sentimental, Shallow, Silly, Simple, Slender, Slight, Slow, Solemn, Spiritless, Stale, Sterile, Stiff, Stodgy, Stuffy, Stupid, Superficial, Tasteless, Tedious, Tentative, Thin, Thoughtless, Tranquil, Trifling, Trite, Trivial, Unacquainted, Unavailing, Uncomprehending, Unenlightened, Unfamiliar, Uninformed, Uninitiated, Unintellectual, Unintelligent, Unknowing, Unoccupied, Unreasonable, Unreasoning, Unrelieved, Unripe, Unsavory, Unsure, Unthinking, Unversed, Useless, Vacant, Vacuous, Vain, Vapid, Void, Wacky, Washy, Watered, Watery, Weak, Wet, White, Windy, Witless, Wooden, Fatuous, Featureless, Feckless, Flaky, Flat, Flimsy, Fond, Fool, Foolish, Frivolous, Frothy, Fruitless, Fuddled, Futile, Gaga, Garbled, Gauche, Goofy, Green, Groping, Heavy, Hollow, Idiotic, Idle, Ignorant, Imbecile, Imbecilic, Inadequate, Indifferent, Ineffective, Ineffectual, Inept, Inexperienced, Infatuated, Innocent, Innocuous, Inoperative, Insane, Insignificant, Insipid, Invalid, Jejune, Laughable, Leaden, Lifeless, Light, Loony, Ludicrous, Lunatic, Mad, Maudlin, Meaningless, Mild, Moronic, Naive, Nonsensical, Null, Nuts, Nutty, Oblivious, Pale, Pallid, Pappy, Passive, Pedestrian, Plodding, Pointless, Poky, Ponderous, Preposterous, Pulpy, Purposeless, Raw, Relaxed, Ridiculous, Risible, Scrambled, Screwy