bite your tongue

US /baɪt jʊər tʌŋ/
UK /baɪt jʊər tʌŋ/
"bite your tongue" picture
1.

mordre sa langue, se retenir de parler

to make a conscious effort to avoid saying something that you want to say, often because it would be inappropriate or cause trouble

:
I had to bite my tongue to keep from telling him what I really thought.
J'ai dû mordre ma langue pour ne pas lui dire ce que je pensais vraiment.
She wanted to argue, but decided to bite her tongue.
Elle voulait discuter, mais a décidé de mordre sa langue.