Loudmouth

Etymology
From loud + mouth.

Noun

 * 1)  One who talks too much or too loudly, especially in a boastful or self-important manner.
 * I hear every word spoken by the loudmouth in the next office.

Synonyms

 * big mouth, blowhard, blusterer, boaster, braggart

Translations

 * German:


 * Hungarian: nagyszájú