(n.) Indifference; carelessness; disinterest; coolness\.

accidia acedia aloofness apathy ataraxia ataraxy benumbedness blah blahs carelessness casualness comatoseness detachment disinterest dispassion disregard disregardfulness dullness easygoingness heartlessness hebetude heedlessness hopelessness inappetence inattention incuriosity indifference indiscrimination inexcitability insouciance lack of affect lack of appetite lackadaisicalness languidness lethargicalness lethargy listlessness mindlessness negligence numbness offhandedness passiveness passivity phlegm phlegmaticalness phlegmaticness plucklessness pococurantism recklessness regardlessness resignation resignedness sloth sluggishness sopor soporifousness spiritlessness spunklessness stupefaction stupor supineness torpidity torpidness torpor unanxiousness unconcern unmindfulness unsolicitousness withdrawnness