that's that
Synonyms
Examples
Baker and Minogue, Hodder and Stoughton, 2002. p 111. She had written lyrics before, but called them "safe, just neatly rhymed words and that's that".
There's no bad blood, just a relationship that came to an end, and that's that."
If he thinks I'm ready then that's that.
They happen about once a week and that's that.