braggart

The story

1. Middle French · borrowed frombragard“bragging, flaunting, vain", also "a showy, arrogant individual”
2. English todaybraggart

From Middle French bragard (“bragging, flaunting, vain", also "a showy, arrogant individual”), from braguer (“to boast, brag”). No firm relation to English brag has been established.

First known use, by meaning

• from late 16th c. Someone who constantly brags or boasts.