effrontery
🇺🇸
/ɪˈfrʌntəri/
🇬🇧
/ɪˈfrʌntəri/
Bold and rude behavior without feeling ashamed
He showed effrontery by interrupting the meeting and speaking out of turn.
他因打断会议并不合时宜地发言而表现出厚颜无耻。