Source : Webster's Revised Unabridged Dictionary (1913)

Ill-mannered \Ill`-man"nered\, a.
   Impolite; rude.

Source : WordNet®

ill-mannered
     adj : socially incorrect in behavior; "resentment flared at such
           an unmannered intrusion" [syn: {rude}, {unmannered}, {unmannerly}]