IDIOTIC

adj. 25B6; adjective STUPID, silly, foolish, witless, brainless, mindless, thoughtless, unintelligent; imprudent, unwise, ill-advised, ill-considered, half-baked, foolhardy; absurd, senseless, pointless, nonsensical, inane, fatuous, ridiculous; informal dumb, dim, dim-witted, half-witted, dopey, gormless, hare-brained, pea-brained, wooden-headed, thickheaded; Brit. informal barmy, daft; Scottish & N. English informal glaikit.