Have hysterics Definition 1 of 1Pro Tip 1/3Emotional Intensity Used when emotions are so strong that they cause an exaggerated response. She had hysterics at the funeral, wailing louder than anyone. Pro Tip 2/3Often Negative May imply that the reaction is excessive or inappropriate for the situation. He had hysterics over a minor scratch on his car. Pro Tip 3/3Informal Usage Common in casual conversation rather than formal writing or speech. In casual chat, she said she had hysterics during the comedy show.