決定を下す

make a decision

→ 決定
phrase Rare #41,862
make a decision A formal expression meaning to make or reach a decision. It is often used for important or difficult decisions.
JA: 決定を下す前に事実をよく知らなければだめです。
EN: You must know the facts well before making a decision.

決定を下すのは彼の権限

It is within his authority to make the decision.

これは難しい問題決定を下すのは誰にとっても容易なことではありません

This is a difficult problem, and making a decision is not easy for anyone.

決定を下す前に事実をよく知らなければだめです

You need to know the facts well before making a decision.

問題は誰が決定を下すということだ

The issue is who makes the decision.