But he cannot truly unsay what was said.
MSNBC(Mar 18, 2015)
There are things you can never unsay, that you cannot say and still remain friends, and that would have been one of them.
The Guardian(Sep 24, 2014)
He wanted to unsay all the things he had said about her—even unsay the things Leslie had said.
Katherine Paterson, Bridge to Terabithia(1997)