彼は度胸を据えて外人に話し掛けた。
He mustered up his courage to talk to a foreigner.

度胸があるな。
You have got a lot of nerve.

男は度胸、女は愛敬。
Man is judged by his courage, woman by her charm.

いい度胸してるな。
You have a lot of nerve.

度胸が足りないぞ。
You don't have the guts.

トムは度胸がない。
Tom lacks courage.