From Longman Dictionary of Contemporary Englishill-manneredˌill-ˈmannered adjective formal RUDE/IMPOLITEnot polite and behaving badly in social situations OPP well-mannered► see thesaurus at rude
Examples from the Corpus
ill-mannered• He was well aware that he made young men look badly dressed and ill-mannered.• I was abominably ill-mannered, and I apologize.• For their part the permanent staff thought all new prisoners childish, ill-mannered and unbalanced.• Wilful impediment of the sacred moves was not only ill-mannered, but the worst form of blasphemy.• I am rock's foremost poet and ill-mannered grouch.• It would be ill-mannered to make open mention of Campbell superiority. 