boaster

At the party, the boaster kept talking about his own achievements nonstop.

在聚会上，那个自夸的人不停地谈论自己的成就。

The team grew tired of the boaster who claimed he alone won every game.

团队对那个吹嘘自己独自赢得每场比赛的自夸者感到厌烦。

Despite being a boaster, he failed to deliver on any of his promises.

尽管是个自夸的人，他却未能兑现任何承诺。