effrontery /ɪˈfrʌntərɪ/

• 1. 

  N-UNCOUNT Effrontery is behaviour that is bold, rude, or disrespectful. 放肆; 厚颜无耻 [正式]

  例：

  The man had the effrontery to be sarcastic.

  那个男人有冷嘲热讽的放肆劲。