Meaning of the word "a done deal" in English

What does "a done deal" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a done deal

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

Idiom

1.

a final agreement or decision that cannot be changed

Example:
The contract is signed, so it's a done deal.
Don't worry, the merger is a done deal; the announcement will be made next week.
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