Etymology Explorer › Middle Welsh

Where does “y” come from?

y (Middle Welsh) comes from Old Welsh ir, from Proto-Celtic sindos, from Proto-Indo-European sḗm, from Proto-Indo-European sem- — together, one.

Ancestry of “y”, step by step

StepLanguageWordMeaning
1Old Welshirthe
2Proto-Celticsindosthis
3Proto-Indo-Europeansḗmone
4Proto-Indo-Europeansem-together, one

Words derived from “y”

  • y
  • yr
  • rydw
  • rydych
Every word from Proto-Indo-European sem- →