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Definition of excitability:

  1. The property manifested by living organisms, and the elements and tissues of which they are constituted, of responding to the action of stimulants; irritability; as, nervous excitability.
  2. The quality of being readily excited; proneness to be affected by exciting causes.


fretfulness, choler, petulance, peevishness, surliness, snappishness, irritability, temper, crossness, fussiness, unpredictability, volatility, biliousness, pettishness, excitableness.

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