Answer: boasting

AnswerCrossword Clue
BOASTINGBlowhard's activity
BOASTINGSounding off
BOASTINGChest-thumping
boastingTalk with excessive pride and self-satisfaction about one's achievements, possessions, or abilities
boasting(of a person, place, or thing) Possess (a feature that is a source of pride)
boastingthe act of boasting