Meaning of “audacity” - Learner’s Dictionary

audacity

noun [ U ] us uk /ɔːˈdæsəti/

showing too much confidence in your behaviour in a way that other people find shocking or rude:

And then he had the audacity to blame me for his mistake!
audacious adjective us uk /ɔːˈdeɪʃəs/

(Definition of “audacity” from the Cambridge Learner’s Dictionary © Cambridge University Press)