bravado/brəˈvɑ:dəu; brə`vɑdo/ n[U](usu unnecessary or false) display of boldness （通常指无必要的或虚伪的）逞能, 虚张声势 Take no notice of his threats they're sheer bravado. 别理会他的威胁--完全是虚张声势.
牛津英汉双解词典