Braggadocio (noun)
brag-a-doh-shee-oh
Empty boasting; bragging. / A braggart or person who brags.
After Braggadocchio, boastful character in Spenser’s Faerie Queene (1590), apparently a pseudo-Italian coinage based on brag.
Example sentences
“He claims he’s such a big player, but in truth he’s nothing but a braggadocio.”