a done deal

US /ə dʌn diːl/
UK /ə dʌn diːl/
"a done deal" picture
1.

既成事実, 決定事項

a final agreement or decision that cannot be changed

:
The contract is signed, so it's a done deal.
契約は署名されたので、それは既成事実です。
Don't worry, the merger is a done deal; the announcement will be made next week.
心配しないで、合併は既成事実です。来週発表されます。