Synonyms and related words :
acedia, aloofness, anorexia, anorexia nervosa, apathy, ataraxia, ataraxy, benumbedness, blah, blahs, comatoseness, desirelessness, detachment, disinterest, dispassion, dullness, heartlessness, hebetude, hopelessness, indifference, insouciance, lack of appetite, languidness, lethargicalness, lethargy, listlessness, lovelessness, nirvana, nonchalance, numbness, passionlessness, passiveness, passivity, phlegm, phlegmaticalness, phlegmaticness, plucklessness, resignation, resignedness, sloth, sluggishness, sopor, soporifousness, spiritlessness, spunklessness, stupefaction, stupor, supineness, torpidity, torpidness, torpor, unambitiousness, unconcern, undesirousness, uneagerness, withdrawnness