effrontery
Concise Oxford English Dictionary © 2008 Oxford University Press:
effrontery /ɪˈfrʌnt(ə)ri/
▶noun insolence or impertinence.
– origin C17: from Fr. effronterie, based on late L. effrons, effront- ‘shameless, barefaced’, from ex- ‘out’ + frons ‘forehead’.
'effrontery' also found in these Oxford entries:

