Where does “swapsies” come from?

swapsies (English) comes from English swap, from Middle English swap, from Middle English swappe — a blow, strike, lash from a whip.

swapsies (English): The act of swapping

Definitions

  1. The act of swapping

Ancestry of “swapsies”, step by step

swapsies traces back through two separate lines of ancestry.

via English swap

StepLanguageWordMeaning
1EnglishswapTo exchange or give in an exchange; To hit, to...
2Middle Englishswap
3Middle Englishswappea blow, strike, lash from a whip

via English sies

StepLanguageWordMeaning
1EnglishsiesExpressing disgust, disappointment, or annoyance;...
Every word from Middle English swappe