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

1.
收回自己的話, 承認說錯了
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.
他說我做不到,但我會讓他收回他的話。
•
After the team won, the critics had to eat their words.
球隊獲勝後,評論家們不得不收回他們的話。