impertinent

adjective

1 she asked a lot of impertinent questions:

rude, insolent, impolite, unmannerly, ill-mannered, bad-mannered, uncivil, discourteous, disrespectful;

impudent, cheeky, audacious, bold, brazen, brash, shameless, presumptuous, forward, pert;

tactless, undiplomatic, unsubtle, personal;

informal brass-necked, fresh, flip;

British, informal saucy;

North American, informal sassy, nervy;

archaic malapert, contumelious;

rare mannerless.

▷antonyms polite.

2 formal talk of ‘rhetoric’ is impertinent to this process:

irrelevant, inapplicable, inapposite, inappropriate, immaterial, unrelated, unconnected, not germane;

beside the point, out of place, nothing to do with it, neither here nor there.

▷antonyms relevant, pertinent.

impertinent Oxford Dictionary of English