Meaning

noun speaking of yourself in superlatives

verb show off

verb wear or display in an ostentatious or proud manner

originFrom Middle English bosten, from bost (“boast, glory, noise, arrogance, presumption, pride, vanity”), probably of North Germanic origin, ultimately from Proto-Germanic *bausuz (“inflated, swollen, puffed up, proud, arrogant, bad”). Cognate with Scots bost, boist (“to threaten, brag, boast”), Anglo-Norman bost (“ostentation”) (from Germanic). Related to Norwegian baus (“proud, bold, daring”),…

Etymology from Wiktionary, CC BY-SA 3.0