Synonyms and related words :
Urdummheit, accidia, acedia, acuteness, animality, apathy, asininity, ataraxia, ataraxy, atrocity, barbarity, battiness, blindness, bloodlust, brainlessness, brutality, buffoonery, carelessness, casualness, clownishness, crackpottedness, crankiness, craziness, daffiness, deafness, desipience, destructiveness, detachment, disinterest, dispassion, disregard, disregardfulness, easygoingness, eccentricity, extremity, fatuity, fatuousness, ferociousness, fierceness, folly, foolery, foolheadedness, foolishness, force, frivolity, frivolousness, furiousness, giddiness, goofiness, harshness, heedlessness, idiocy, ignorance, imbecility, impetuosity, inanity, inattention, incapacity, inclemency, incognizance, incomprehension, incuriosity, indiscrimination, ineptitude, inexcitability, inhumanity, insanity, insensibility, insouciance, intensity, irrationality, lack of affect, lackadaisicalness, lackbrainedness, lackwittedness, listlessness, low IQ, lunacy, madness, malignity, mental weakness, mercilessness, murderousness, negligence, niaiserie, nonchalance, nonrealization, nonrecognition, nugacity, nuttiness, pitilessness, pococurantism, primal stupidity, queerness, reasonlessness, recklessness, regardlessness, rigor, roughness, sappiness, savagery, screwiness, senselessness, severity, sharpness, silliness, slackmindedness, slackwittedness, sloth, stupidity, terrorism, thoughtlessness, triflingness, triviality, unanxiousness, unawareness, unconcern, unconsciousness, ungentleness, unintellectuality, unintelligence, unmindfulness, unsolicitousness, unwisdom, unwiseness, unwittingness, vandalism, vehemence, venom, viciousness, violence, virulence, wackiness, weirdness, witlessness, zaniness, zanyism