1) Arrogant loudmouth 2) Boaster 3) Boastful windbag 4) Braggart 5) Braggart, slang 6) Bragger 7) British slang for a boaster 8) Egoist 9) Egotist 10) Exclusively Saxon word 11) Exclusively Anglo word 12) Line-shooter 13) Loudmouthed boor 14) Outspoken hotshot 15) Swellhead 16) Vaunter 17) Word with Anglo-Saxon origins 1) Bag of wind 2) Big talker 3) Boaster 4) Braggart 5) Bragger 6) Gasbag 7) Vaunter 8) Windbag 
Blowhard is British slang for a boaster.