頭あたまを冷ひやす

expression, godan verb (-su)

cool down one's anger; calm down

Idiomatic expression meaning to let one's heated emotions subside and regain composure. Often used when advising someone to step back from a heated situation.

• そんなに怒おこらないで、少すこし頭あたまを冷ひやしたほうがいいよ。

  Don't get so angry; you should cool down a bit.

• 彼かれは頭あたまを冷