Where does “helygen y môr” come from?

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

Ancestry of “helygen y môr”, step by step

helygen y môr traces back through 3 separate lines of ancestry.

via Welsh y

StepLanguageWordMeaning
1Welshythe; that; which, whom
2Middle Welshyhis, its with reference to a masculine noun; triggers soft mutation of following consonant
3Old Welshirthe
4Proto-Celticsindosthis
5Proto-Indo-Europeansḗmone
6Proto-Indo-Europeansem-together, one

via Welsh môr

StepLanguageWordMeaning
1Welshmôrsea, ocean, the deep; plenty, abundance,...
2Proto-Brythonicmọrgreat, large
3Proto-Celticmorisea
4Proto-Indo-Europeanmórisea; standing water
5Proto-Indo-Europeanmer-to die; to disappear; sea, lake, wetland

via Welsh helyg

StepLanguageWordMeaning
1Welshhelygwillows
Every word from Proto-Indo-European sem- →