testiness(n = noun.feeling) tetchiness, touchiness - feeling easily irritated;
is a kind of choler, crossness, fretfulness, fussiness, irritability, peevishness, petulance
Derived form adjective testy1
The quality or state of being testy; fretfulness; petulance. [1913 Webster]
"Testiness is a disposition or aptness to be angry." [1913 Webster]