Where does “allt” come from?

allt (Middle Welsh) comes from Proto-Brythonic *alt, from Proto-Celtic altos, from Proto-Indo-European h₂eltós, from Proto-Indo-European h₂él- — to grow, nourish.

Ancestry of “allt”, step by step

StepLanguageWordMeaning
1Proto-Brythonic*alt—
2Proto-Celticaltosheight, cliff
3Proto-Indo-Europeanh₂eltós—
4Proto-Indo-Europeanh₂él-to grow, nourish

Words derived from “allt”

Every word from Proto-Indo-European h₂él- →Every word from Proto-Indo-European h₂eltós →Every word from Proto-Celtic altos →