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sidesplitter

American  
[sahyd-split-er] / ˈsaɪdˌsplɪt ər /

noun

  1. something that is uproariously funny, as a joke or a situation.

Etymology

Origin of sidesplitter

First recorded in 1830–35; from the idiom to split one's sides (laughing); -er 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.