bravado
n. 虚张声势；冒险
复数 bravadoes或bravados
例句
"You won't get away with this," he said with unexpected bravado.
“你逃脱不了的,”他带着出人意料的假自信说道。
《柯林斯英汉双解大词典》
As a footnote, I should add that there was one point on which his bravado was more than justified.
作为补充说明，我应该再加一点，他表现得过于逞强。
The bravado was wearing off.
那种虚张声势的作用正在逐渐消失。
