eat your words
US /iːt jʊər wɜrdz/
UK /iːt jʊər wɜrdz/

1.
ravaler ses mots, manger ses mots
to admit that something you said earlier was wrong, especially when you were boasting or very confident
:
•
He said I couldn't do it, but I'll make him eat his words.
Il a dit que je ne pouvais pas le faire, mais je vais le faire ravaler ses mots.
•
After the team won, the critics had to eat their words.
Après la victoire de l'équipe, les critiques ont dû ravaler leurs mots.