The Collaborative International Dictionary
Effrontery \Ef*front"er*y\, n.; pl. Effronteries. [F. effronterie, fr. effront['e] shameless, fr. L. effrons, -ontis, putting forth the forehead, i. e., barefaced, shameless; ex + frons the forehead. See Front.] Impudence or boldness in confronting or in transgressing the bounds of duty or decorum; insulting presumptuousness; shameless boldness; barefaced assurance.
Corruption lost nothing of its effrontery.
--Bancroft.
Syn: Impudence; sauciness. See Impudence.
Wiktionary
n. (plural of effrontery English)
Usage examples of "effronteries".
The Lincoln woman’s recent attempt to sabotage the launching of Morning Star was only the latest in a never-ending series of effronteries committed by Khan’s sanctimonious former associates.
I assure you, Sir Knight, that if I had known of the effronteries of those village swains, they would all have borne fat ears!