preposterousness Synonyms

absurdity lunacy madness psychopathy psychosis risibility silliness stupidity feeblemindedness fatuousness ridiculousness meaninglessness nonsensicality inadvisability outlandishness illogicality pointlessness senselessness irrationality insanity absurdness asininity craziness daftness dementia exorbitance extravagance fatuity folly foolery foolishness idiocy imbecility implausibility impossibility inanity insaneness outrageousness