a done deal
US /ə dʌn diːl/
UK /ə dʌn diːl/

1.
확정된 일, 끝난 일
a final agreement or decision that cannot be changed
:
•
The contract is signed, so it's a done deal.
계약이 체결되었으니, 확정된 일입니다.
•
Don't worry, the merger is a done deal; the announcement will be made next week.
걱정 마, 합병은 확정된 일이야. 다음 주에 발표될 거야.