n. insolence, boldness, brazenness, impudence, presumption, presumptuousness, brashness, sauciness, pertness, incivility, forwardness, impoliteness, discourtesy, disrespect, audacity, rudeness, effrontery, Colloq cheek, brass, brassiness, nerve, gall, Slang chutzpah: Why, the impertinence of that waitress to call you by your Christian name!
IMPERTINENCE
Meaning of IMPERTINENCE in English
Oxford thesaurus English vocab. Английский словарь Оксфорд тезаурус. 2012