See idiotic in Webster's New World Roget's A-Z Thesaurus II
adjective
So senseless as to be laughable:
absurd, foolish, harebrained, imbecilic, insane, lunatic, mad, moronic, nonsensical, preposterous, silly, softheaded, tomfool, unearthly, zany. (Informal) cockeyed, crazy, loony, loopy. (Slang) balmy2, dippy, dopey, jerky, sappy, wacky. See ability, knowledge
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