Someone who constantly brags or boasts.
(derogatory) 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.’;
Characterized by boasting; boastful.
a person who causes trouble by speaking indiscreetly
‘O, I could play the woman with mine eyes, And braggart with my tongue.’;
a very boastful and talkative person
a person who boasts about their achievements or possessions