impertinent

Synonyms: arrogant brash brassy brazen contumelious discourteous disgracious flip forward fresh illmannered impolite impudent inappropriate incongruous inquisitive insolent interfering intrusive lippy meddlesome meddling nosy off base offensive out of line pert presumptuous procacious prying rude sassy smart smart alecky uncalled-for uncivil ungracious unmannerly unsuitable

Antonyms: kind mannered nice polite refined respectful