Synonyms for Dispassion

Unconcern
acedia ataraxy blah blahs detachment disinterest	dispassion hebetude hopelessness inappetence indifference	insouciance listlessness nonchalance numbness passivity	phlegm resignation sopor torpor unconcern

Abstinence
abnegation abstinence austerity calm conservatism constraint	continence control cool dispassion evenness gentleness	happy medium judiciousness neutrality nonviolence pacifism repose	restraint self-restraint serenity sobriety stability tranquillity

Dullness
anesthesia autism callousness	chill coldness dispassion	dullness objectivity poker face	self-absorption straight face