silliness Synonyms

absurdity fatuousness giddiness fatuity nonsensicality inadvisability fruitlessness moronity outlandishness light-mindedness frivolousness meaninglessness ridiculousness shallowness stupidity superficiality tomfoolery triviality vertigo unreasonableness feeblemindedness mindlessness illogicality witlessness preposterousness outrageousness nuttiness ludicrousness inaneness goofiness schmuckiness doltishness brainlessness Folley skittishness monkey business senselessness pointlessness malarky clowning zaniness risibility harlequinade gambolling futility fumishness frivolity foppery foolishness foolhardiness