Synonyms of 'folly'

absurdity, absurdness, asininity, blunder, buffoonery, dumbness, eccentricity, error, fatuity, fatuousness, faux pas, fluff, foolery, frivolity, frivolousness, gaffe, goof, idiocy, imbecility, inanity, indiscretion, ineptitude, insanity, irrationality, lunacy, madness, mindlessness, mistake, nonsense, preposterousness, triviality, weirdness