- 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(informal) wild laughter She had the audience in hysterics. The whole class dissolved into hysterics when they saw him. Idioms
to be extremely upset and angry My mom'll have hysterics when she sees the color of my hair.
have hysterics(informal)jump to other results