Composure refers to a state or quality of being calm, composed, and collected in any stressful or difficult situation. Synonyms for composure include serenity, equanimity, tranquility, poise, self-control, coolness, balance, and imperturbability. Serenity suggests a deep sense of peace and tranquility even under extreme stress. Equanimity emphasizes the ability to remain level-headed and impartial in any situation. Tranquility implies a sense of stillness, quietude, and peacefulness. Poise refers to balance and control of one's emotions and actions. Self-control emphasizes a discipline over one's actions and feelings, while coolness suggests an emotional detachment and a lack of passionate involvement. Imperturbability refers to a steadfastness in the face of disruption or chaos.