impassiveness Synonyms

impassivity emotionlessness unemotionality phlegm indifference stolidity stoicism serenity stolidness tranquillity unconcern placidness placidity heedlessness listlessness inactiveness lack of sympathy unresponsiveness passionlessness impassability dispassionateness deadpan affectlessness imperturbability insensitivity callousness lack of concern numbness nonchalance disinterest detachment coolness composure coldness carelessness calmness calm ataraxy apathy disinterestedness dispassion disregard neutrality lethargy insouciance insensibility indifferentism impassibleness equanimity equability