definition of
irritability

[1] #1 irritability n. [crossness, fretfulness, fussiness, peevishness, petulance, choler] an irritable petulant feeling. wn

[2] #2 irritability n. [excitability] excessive sensitivity of an organ or body part. wn

[3] #3 irritability n. [temper, biliousness, peevishness, pettishness, snappishness, surliness] a disposition to exhibit uncontrolled anger; "his temper was well known to all his employees". wn