From The Collaborative International Dictionary of English v.0.48 :
Angriness \An"gri*ness\, n.
The quality of being angry, or of being inclined to anger.
[1913 Webster]
Such an angriness of humor that we take fire at
everything. --Whole Duty
of Man.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
angriness
n 1: the state of being angry [syn: anger, angriness]