effrontery

她竟然在公开场合反驳老师，真是厚颜无耻。

Her ___effrontery to contradict the teacher in public was unbelievable.

那个刚入职的初级分析师竟敢走进总经理办公室要求加薪，真是胆大包天。

The newly hired junior analyst had the ___effrontery to walk into the managing director's office and demand a higher salary.

她竟敢在护照检查处推开所有排队的人插到前面，还对检查员翻白眼。

She had the ___effrontery to push past everyone in the queue at passport control and then roll her eyes at the officer.