audacity

Audacity refers to a willingness to take bold, often risky risks, or a confident and daring approach to life. The mental image is someone standing tall and unflinching in the face of authority or a daunting challenge, acting with a level of courage that borders on being disrespectful or shocking. While it can describe admirable bravery, it frequently carries a nuance of brazenness or impudence. You might use it to praise a daring plan, but be careful—if you accuse someone of having the "audacity" to do something, you are likely criticizing them for being rude, cheeky, or overstepping their boundaries.
In conversation
Discussing a bold career move
I actually asked the CEO for a promotion during the elevator ride.
I actually asked the CEO for a promotion during the elevator ride.
You have some serious audacity! Did it work?
You have some serious audacity! Did it work?
Here, 'audacity' is used to describe a bold, slightly shocking action.
Critiquing a rude comment
He told me my outfit was unprofessional in front of the whole team.
He told me my outfit was unprofessional in front of the whole team.
Wow, the audacity of that man. Who does he think he is?
Wow, the audacity of that man. Who does he think he is?
In this context, 'audacity' highlights someone's lack of social filter or blatant disrespect.
Examples
She had the audacity to suggest that we change the entire project plan.
She had the audacity to suggest that we change the entire project plan.
It took great audacity to challenge the status quo during the meeting.
It took great audacity to challenge the status quo during the meeting.
His audacity in the face of overwhelming odds earned him the respect of his fiercest rivals.
His audacity in the face of overwhelming odds earned him the respect of his fiercest rivals.