Source : Webster's Revised Unabridged Dictionary (1913)

Angriness \An"gri*ness\, n.
   The quality of being angry, or of being inclined to anger.

         Such an angriness of humor that we take fire at
         everything.                              --Whole Duty
                                                  of Man.

Source : WordNet®

angriness
     n : the state of being angry [syn: {anger}]