impertinence

noun

they gasped at the impertinence of the suggestion:

rudeness, insolence, impoliteness, unmannerliness, bad manners, lack of civility, discourtesy, discourteousness, disrespectfulness, incivility;

impudence, cheek, cheekiness, audacity, temerity, effrontery, nerve, gall, boldness, brazenness, brashness, shamelessness, presumptuousness, presumption, forwardness;

informal brass, brass neck, neck, face, front, cockiness;

British, informal sauce;

Scottish, informal snash;

North American, informal sass, sassiness, nerviness, chutzpah;

informal , dated hide, crust;

archaic malapertness;

rare procacity, assumption.

▷antonyms politeness.

impertinence Oxford Dictionary of English