irritability in WordNet English dictionary

1. a disposition to exhibit uncontrolled anger
   "his temper was well known to all his employees"
   temper  biliousness  irritability  peevishness  pettishness  snappishness  surliness 
   
2. an irritable petulant feeling
   irritability  crossness  fretfulness  fussiness  peevishness  petulance  choler 
   
3. excessive sensitivity of an organ or body part
   excitability  irritability