effrontery
noun /ɪˈfrʌntəri/
/ɪˈfrʌntəri/
[uncountable] (formal)- behaviour that is confident and very rude, without any feeling of shame synonym nerve
- He had the effrontery to accuse me of lying!
Word Originlate 17th cent.: from French effronterie, based on late Latin effrons, effront- ‘shameless, barefaced’, from ex- ‘out’ + frons ‘forehead’.