la boccaccia

big mouth, loudmouth

bocc mouth + accia feminine augmentative or pejorative
noun · feminine Rare #40,783
big mouth, loudmouth Colloquial and often insulting; can refer to someone who talks too much or speaks rudely.
IT: Non raccontargli il segreto: ha una boccaccia.
EN: Don’t tell him the secret; he has a big mouth.

Abbiamo una boccaccia e ci siamo comportate male.

We have a big mouth and we have behaved badly.

— I fiori della guerra (2011)

Chiudete quella boccaccia!

Shut your mouth!

— Tampopo (1985)

Lavati quella boccaccia di merda.

Wash that filthy mouth of yours.

— Kill Bill: The Whole Bloody Affair (2011)

Non riesce proprio a tenere chiusa la boccaccia.

She just can't keep her trap shut.

— मुन्ना भाई एम बी बी एस (2003)

Tu e la tua boccaccia.

You and your big mouth.

— Quei bravi ragazzi (1990)