SYNONYMS
impudence, impertinence, insolence, cheekiness, audacity, temerity, brazenness, presumption, effrontery, nerve, gall, pertness, boldness, shamelessness, impoliteness, disrespect, bad manners, unmannerliness, overfamiliarity
answering back, talking back
informal brass, brass neck, neck, face, lip, mouth, cockiness
British informal sauce
Scottish informal snash
North American informal sass, sassiness, nerviness, chutzpah, back talk
informal, dated hide
British informal, dated crust, backchat
archaic malapertness, contumely
rare procacity, assumption