RUDE/IMPOLITErude behaviour that shocks you because it is so confident 厚颜无耻的行为SYN nerve
have the effrontery to do something
She had the effrontery to ask me for more money.
她还有脸跟我再要钱。
Examples from the Corpus
effrontery• The arroganteffrontery of the man defied belief.• He might even pray earnestly to Saint Winifred to protect him, he had the innocenteffrontery for it.• Maybe effrontery would dismiss him as too negligible to pursue.• It was the sheereffrontery, the excessiveassurance of them which got under my skin.
Origineffrontery
(1600-1700)Frencheffronterie, from Late Latineffrons“shameless”