expression, godan verb (-ru)
calm down; collect oneself; cool off
Used when someone regains composure after being upset, angry, or panicked. Often used in the imperative 冷静になれ or as advice.
Antonyms: 感情にはしる
まずは冷静になって、状況を整理しよう。
First, calm down and sort out the situation.
彼は怒っていたが、少し時間をおいて冷静になった。
He was angry, but after a little time he cooled off.