effrontery
noun [ U ] formal uk/ɪˈfrʌn.tər.i/ us/efˈrʌn.tər.i/
厚颜无耻;放肆
extreme rudeness without any ability to understand that your behaviour is not acceptable to other people
He was silent all through the meal and then had the effrontery to complain that I looked bored! 在饭桌上他自始至终一言不发，到头来却有脸抱怨我一副百无聊赖的样子。
Synonym: presumption