Where does “sidesplitting” come from?

sidesplitting (English) comes from English Side, from Middle English side, from Old English sīde, from Proto-West Germanic *sīdā, from Medieval Latin sida, from Late Latin seta, from Latin saeta, from Proto-Italic saitā — to satiate, satisfy.

sidesplitting (English): Intensely uncontrollable and genuine;...

Definitions

  1. Intensely uncontrollable and genuine;...

Ancestry of “sidesplitting”, step by step

sidesplitting traces back through two separate lines of ancestry.

via English Side

StepLanguageWordMeaning
1EnglishSideA bounding straight edge of a two-dimensional shape
2Middle Englishsidecustom
3Old Englishsīdeside, flank
4Proto-West Germanic*sīdāside
5Medieval Latinsida
6Late LatinsetaAlternative form of saeta; hair, bristle; bristle
7Latinsaetaa bristle, hair on an animal; silk
8Proto-Italicsaitā
9Proto-Indo-Europeanséh₂ito-
10Proto-Indo-Europeansh₂ey-to bind, fetter
11Proto-Indo-Europeanseh₂-to satiate, satisfy

via English splitting

StepLanguageWordMeaning
1EnglishsplittingAn instance where something splits; A division in...
2EnglishsplitDivided; Having the middle group equal to the...
3Middle Low Germansplittento split
4Middle Low Germansplīten

Words derived from “sidesplitting

Every word from Proto-Indo-European seh₂-