accidia
acedia
aloofness
apathy
ataraxia
benumbedness
blah
blahs
bovinity
calmness
carelessness
casualness
comatoseness
composure
contemplation
coolness
detachment
disinterest
dispassion
dispassionateness
disregard
disregardfulness
dullness
easy temper
easygoingness
even temper
good temper
heartlessness
hebetude
heedlessness
hopelessness
impassiveness
impassivity
imperturbability
imperturbableness
inappetence
inattention
incuriosity
indifference
indiscrimination
inexcitability
inexcitableness
inirritability
insouciance
lack of affect
lack of appetite
lackadaisicalness
languidness
lethargicalness
lethargy