adj. 25B6; adjective IMPUDENT, impertinent, insolent, presumptuous, forward, pert, bold (as brass), brazen, cocky, overfamiliar, discourteous, disrespectful, impolite, bad-mannered; informal brass-necked, lippy, mouthy, fresh, saucy; N. Amer. informal sassy, nervy; archaic assumptive.
respectful, polite.