hilarity

Hilarity is that side-splitting, tear-inducing, laugh-until-you-can't-breathe happiness of a romping good time.

There's usually an atmosphere of hilarity just after the ball drops on New Year's Eve. It's that feeling of cheerfulness — hilaritas in Latin — that fills the room when the clock strikes midnight. If your teacher passes out cupcakes and lets you play games instead of reading aloud, she may have a hard time controlling the ensuing hilarity in the classroom.

Definitions of hilarity
  1. noun
    great merriment
    synonyms: glee, gleefulness, mirth, mirthfulness
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    type of:
    gaiety, merriment
    a gay feeling
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