Bravado is an appearance of courage or confidence that someone shows in order to impress other people.
例句
'You won't get away with this,' he said with unexpected bravado.“這事你休想就這么過去，”他以出人意料的強橫語氣說道。
英漢詞典釋義
n.
逞能,虛張聲勢
‘I’ll be fine on my own,’ she said with bravado.“我一個人沒問題。”她逞能地說。He behaved aggressively out of bravado.他擺出一副挑釁的架勢，但只是虛張聲勢。Their behaviour was just sheer bravado.他們的行為完全是虛張聲勢。