And that's that/and that's final

7th March 2024

And that's that/and that's final

We use this expression to say we definitely won't change a decision we have made.
Usage
Written: 
Yes
Spoken: 
Yes
Formal: 
No
Informal: 
Yes
Example 1
Can I go out with Kenny tonight? He's going to the cinema.
No, you're going to stay and help me, and that's final.
Example 2
Everybody has got an MP3 player at school! I want one.
Well I'm not buying you one now, and that's that.