おちつきはらった (translations)→ calm still
平静 (translations)→ detachment equanimity level peace presence quietude unconcerned
無表情 (translations)→ blank expressionless impassivity stoniness wooden
無表情な (translations)→ dead faceless flat
冷静さ (translations)→ composedness dispassionate head nerve
冷静な (translations)→ collected cool detached even hardheaded phlegmatic