Characterized by or given to boasting: boastful, rodomontade.

Is there such a word as braggart?

Braggart is a pejorative word, which means it is used as an insult, so you shouldn't call your boss or your teacher a braggart — unless you're looking for trouble. Braggart is similar to other pejoratives like blowhard or bigmouth.

What does braggart mean in the Bible?

a very boastful and talkative person.