impassiveness

a lack of emotion or emotional expressiveness the child's inexplicable impassiveness, after all he'd been through, was a source of concern for his relatives Synonyms affectlessness, emotionlessness, apathy, impassivity, insensibility, numbness, phlegmRelated Words bloodlessness, callosity, callousness, coldness, coolness, halfheartedness, hard-heartedness, hardness, heartlessness, imperturbability, insensitivity, obduracy; blankness, deadness, emptiness, vacancy; aloofness, detachment, indifference, unconcern; stiffness, woodennessNear Antonyms compassion, empathy, pity, sympathy; receptiveness, receptivity, responsiveness, sensitivity; solicitude, tenderness, understanding, warmth; hand-wringing, histrionics, hysteria, hysterics, melodrama; vehemenceAntonyms emotion, feeling, sensibility