betise(n = noun.act) folly, foolishness, imbecility, stupidity - a stupid mistake;
is a kind of error, fault, mistake

N  absurdity, absurdness, imbecility alogy, nonsense, utter nonsense, paradox, inconsistency, stultiloquy, stultiloquence, nugacity, blunder, muddle, bull, Irishism, Hibernicism, slipslop, anticlimax, bathos, sophism, farce, galimathias, amphigouri, rhapsody, farrago, betise, extravagance, romance, sciamachy, sell, pun, verbal quibble, macaronic, jargon, fustian, twaddle, gibberish, exaggeration, moonshine, stuff, mare's nest, quibble, self- delusion, vagary, tomfoolery, poppycock, mummery, monkey trick, boutade, escapade, absurd, nonsensical, preposterous, egregious, senseless, inconsistent, ridiculous, extravagant, quibbling, self-annulling, self- contradictory, macaronic, punning, foolish sophistical, unmeaning, without rhyme or reason, fantastic, Int, fiddlededee!, pish!, pho!, in the name of the Prophet--figs!, credat Judaeus Apella, tell it to the marines.