Definition of hysterics noun from the Oxford Advanced American Dictionary

     

    hysterics

     noun
    noun
    NAmE//hɪˈstɛrɪks//
     
    [plural]
     
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  1. 1an expression of extreme fear, excitement, or anger that makes someone lose control of their emotions and cry, laugh, etc. He went into hysterics when he heard the news.
  2. 2(informal) wild laughter She had the audience in hysterics. The whole class dissolved into hysterics when they saw him.
  3. Idioms
    have hysterics(informal)
     
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    to be extremely upset and angry My mom'll have hysterics when she sees the color of my hair.
See the Oxford Advanced Learner's Dictionary entry: hysterics