(n.) The state or quality of being heavy in its various senses; weight; sadness; sluggishness; oppression; thickness.

accidia aloofness anger apathy ataraxia ataraxy avarice avaritia benumbedness blah blahs boredom carelessness casualness cave of Trophonius cave of despair comatoseness deadly sin despair desperateness desperation despondency detachment disconsolateness disinterest dispassion disregard disregardfulness drowsiness dullness easygoingness enervation ennui envy fatigue forlornness gluttony greed gula heartlessness heaviness hebetude heedlessness hopelessness inanimation inappetence inattention incuriosity indifference indiscrimination inexcitability insouciance invidia ira jadedness lack of affect lack of appetite lackadaisicalness languidness languishment languor languorousness lassitude lenitude lentor lethargicalness lethargy lifelessness listlessness lust luxuria mindlessness negligence no exit no way no way out nonchalance numbness oscitancy passiveness passivity phlegm phlegmaticalness phlegmaticness plucklessness pococurantism pride recklessness regardlessness resignation resignedness satedness sleepiness sloth slothfulness slowness sluggishness somnolence sopor soporifousness spiritlessness spunklessness stupefaction stupor superbia supineness torpidity torpidness torpitude torpor unanxiousness unconcern unmindfulness unsolicitousness weariness withdrawnness world-weariness wrath