breathe a word

US /briːð ə wɜːrd/
UK /briːð ə wɜːrd/
"breathe a word" picture
1.

souffler mot, dire un mot

to tell a secret or something confidential to someone

:
Don't breathe a word of this to anyone.
Ne souffle mot de cela à personne.
She promised not to breathe a word about our plans.
Elle a promis de ne pas souffler mot de nos projets.