audacity
/ɔːˈdæsətɪ/noun
mass noun
1
- the willingness to take bold risks无畏; 大胆：
he whistled at the sheer audacity of the plan.
听到这个大胆的计划他吹了一声口哨。
2
- rude or disrespectful behaviour; impudence放肆; 胆大妄为：
she had the audacity to suggest I'd been carrying on with him.
她竟敢暗示我跟他关系暧昧。
词源
late Middle English: from medieval Latin audacitas, from audax, audac- 'bold' （see AUDACIOUS）.