behaviour that is brave but likely to shock or offend people 鲁莽；大胆无礼 He had the audacity to say I was too fat. 他竟敢说我太肥胖。 🔊🔊 The sheer audacity of the plan amazed everyone. 那个计划莽撞十足，每个人都感到吃惊。
Word Originlate Middle English: from medieval Latin audacitas, from audax, audac- ‘bold’ (from audere ‘dare’).