Other forms: braggarts
A braggart is somebody who boasts constantly. An insufferable braggart, a loud braggart, the braggart was silenced.
The constantly is what makes it: one boast does not make a braggart. It is old-fashioned and literary, and it is the sort of word a narrator uses rather than a person in an argument. Note that the -art ending is the same disparaging one in laggard, sluggard and drunkard.
1nounbraggartSomebody who boasts constantly.
“He's a braggart who never stops talking about his money and his cars.”
braggart is a boaster.
Middle French bragard means boastful, from braguer, to boast. No firm connection with English brag has been shown.
Middle French
bragard — bragging, flaunting, vain", also "a showy, arrogant individual
English, today
braggart
Built from
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.
Etymology from Wiktionary, CC BY-SA