expression, godan verb (-tsu)
keep calm; maintain composure; keep one's temper
Used when someone stays calm and composed in a situation that could provoke anger, panic, or distress.
彼はどんな時でも平静を保つ。
He keeps his composure no matter what.
怒りを感じても、平静を保つように努
Even though I felt angry, I tried to remain calm.