donedeal
nounUK /ˌdʌnˈdiːl/
US /ˌdʌnˈdiːl/
A donedeal is when something is finished and agreed on.
After they shook hands, the trade was a donedeal.
OTHER MEANINGS
2. A completed or finalized transaction.
The sale of the car was a donedeal by noon.
3. Something that is certain or no longer open to change.
Once the votes were counted, the result was a donedeal.
4. An informal term for a person who finishes tasks quickly.
She's a donedeal when it comes to cleaning the kitchen.