Meaning of the word effrontery in English

What does effrontery mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

effrontery

US /efˈrʌn.tər.i/
UK /ɪˈfrʌn.tər.i/

Noun

insolent or impertinent behavior

Example:
He had the effrontery to accuse me of lying.
Her effrontery in questioning the boss's decision was shocking.