The Collaborative International Dictionary of English v.0.48:

Ungracious \Un*gra"cious\, a.
   1. Not gracious; showing no grace or kindness; being without
      good will; unfeeling. --Shak.
      [1913 Webster]

   2. Having no grace; graceless; wicked. [Obs.] --Shak.
      [1913 Webster]

   3. Not well received; offensive; unpleasing; unacceptable;
      not favored.
      [1913 Webster]

            Anything of grace toward the Irish rebels was as
            ungracious at Oxford as at London.    --Clarendon.
      [1913 Webster] -- Un*gra"cious*ly, adv. --
      Un*gra"cious*ness, n.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ungraciousness
    n 1: an offensive lack of good manners [ant: graciousness]