Synonyms to foolery

idiocy, amentia, arrested development, asininity, backwardness, battiness, blithering idiocy, brainlessness, buffoonery, clownishness, crackpottedness, crankiness, craziness, cretinism, daffiness, desipience, eccentricity, fatuity, fatuousness, folly, foolheadedness, foolishness, frivolity, frivolousness, giddiness, goofiness, half-wittedness, idiotism, imbecility, inanity, ineptitude, infantilism, insanity, lunacy, madness, mental defectiveness, mental deficiency, mental handicap, mental retardation, mindlessness, mongolianism, mongolism, mongoloid idiocy, moronism, moronity, niaiserie, nugacity, nuttiness, profound idiocy, queerness, retardation, retardment, sappiness, screwiness, senselessness, silliness, simple-wittedness, simplemindedness, simpleness, simplicity, stupidity, subnormality, thoughtlessness, triflingness, triviality, wackiness, weirdness, witlessness, zaniness, zanyism, banter, backchat, badinage, beard, blandish, blarney, booing, brave, cajole, catcalling, chaff, chaffing, challenge, chitchat, con, dare, defy, deride, derision, exchange, face, flee