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irritable

 
Adjective irritable has 3 senses
  1. cranky, fractious, irritable, nettlesome, peevish, peckish, pettish, petulant, testy, tetchy, techy - easily irritated or annoyed; "an incorrigibly fractious young man"; "not the least nettlesome of his countrymen"
    Antonym: good-natured (indirect, via ill-natured)
  2. irritable - abnormally sensitive to a stimulus
    Antonym:
    insensitive (indirect, via sensitive)
  3. excitable, irritable - capable of responding to stimuli
    Antonym: insensitive (indirect, via sensitive)
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