big mouth
US /ˈbɪɡ ˌmaʊθ/
UK /ˈbɪɡ ˌmaʊθ/
1.
grande gueule, bavard
a person who talks too much, especially about things that should be kept secret
:
•
Don't tell him your secret; he's a real big mouth.
Ne lui dis pas ton secret ; c'est une vraie grande gueule.
•
Her brother is such a big mouth, he always spills the beans.
Son frère est une telle grande gueule, il vend toujours la mèche.