big mouth

US /ˈbɪɡ ˌmaʊθ/
UK /ˈbɪɡ ˌmaʊθ/
"big mouth" picture
1.

ثرثار, كثير الكلام

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.
لا تخبره بسرك؛ إنه ثرثار حقيقي.
Her brother is such a big mouth, he always spills the beans.
أخوها ثرثار جداً، دائماً يفشي الأسرار.