noun
effrontery
ih-FRUN-tuh-ree/ɪˈfrʌntəri/
Boldness that shows a shameless lack of respect.
He has the effrontery to take a fry despite the owner's raised hand.

Etymology
French effronterie names shamelessness. Its underlying adjective probably traces to Latin effrons, “barefaced, shameless,” linking the face as an expression of shame with boldness that disregards propriety.
In context
for impudent effrontery, or for swift and decisive action. He was a king among jewel thieves
More examples
- She has the effrontery to demand an apology after insulting us.
- His effrontery leaves everyone at the meeting speechless.
- They show remarkable effrontery by charging us to fix their own mistake.
Forms
effrontery