Where does “aos sí” come from?

aos sí (Irish) comes from Middle Irish áes side, from Old Irish áes síde, from Old Irish síd, from Proto-Celtic sīdos, from Proto-Indo-European sēds.

aos sí (Irish): fairy folk, fairies

Definitions

  1. fairy folk, fairies

Ancestry of “aos sí”, step by step

StepLanguageWordMeaning
1Middle Irisháes sideinhabitants of fairy mounds, fairies
2Old Irisháes sídeinhabitants of fairy mounds, fairies
3Old Irishsídfairy mound; fairy people, fairies; peace,...
4Proto-Celticsīdostumulus; peace
5Proto-Indo-Europeansēds—
Every word from Proto-Indo-European sēds →Every word from Proto-Celtic sīdos →Every word from Old Irish síd →