1. in a calm, controlled, and dignified manner; without losing one's temper or showing anxiety
She faced the criticism with composure and did not respond emotionally.
Ela enfrentou a crítica com compostura e não respondeu emocionalmente.
2. maintaining self-control and poise in difficult situations
The captain handled the emergency with composure and clear thinking.
O capitão lidou com a emergência com compostura e clareza de pensamento.