Source : Webster's Revised Unabridged Dictionary (1913)

Incivility \In`ci*vil"i*ty\, n.; pl. {Incivilities}. [L.
   incivilitas: cf. F. incivilit['e].]
   1. The quality or state of being uncivil; want of courtesy;
      rudeness of manner; impoliteness. --Shak. Tillotson.

   2. Any act of rudeness or ill breeding.

            Uncomely jests, loud talking and jeering, which, in
            civil account, are called indecencies and
            incivilities.                         --Jer. Taylor.

   3. Want of civilization; a state of rudeness or barbarism.
      [R.] --Sir W. Raleigh.

   Syn: Impoliteness; uncourteousness; unmannerliness;
        disrespect; rudeness; discourtesy.

Source : WordNet®

incivility
     n : deliberate discourtesy [ant: {civility}]