ef·fron·ter·y
noun/ɪˈfrʌntəri/
/ɪˈfrʌntəri/
[uncountable] (formal)- behaviour that is confident and very rude, without any feeling of shame
厚颜无耻的行为；傲慢鲁莽的举止 - He had the effrontery to accuse me of lying!
他竟然厚颜无耻地指责我撒谎！
Word Originlate 17th cent.: from French effronterie, based on late Latin effrons, effront- ‘shameless, barefaced’, from ex- ‘out’ + frons ‘forehead’. - He had the effrontery to accuse me of lying!