Where does “cymylu” come from?

cymylu (Welsh) comes from Welsh cwmwl, from Middle Welsh cwmwl, from Proto-Brythonic kuml, from Latin cumulus, from Proto-Indo-European ku-m-olo, from Proto-Indo-European ḱewh₁- — to swell; to be strong.

cymylu (Welsh): to cloud, to cloud over, to become overcast

Definitions

  1. to cloud, to cloud over, to become overcast

Ancestry of “cymylu”, step by step

StepLanguageWordMeaning
1Welshcwmwlcloud
2Middle Welshcwmwl—
3Proto-Brythonickumlcloud
4Latincumulusheap, pile; surplus; summit
5Proto-Indo-Europeanku-m-olo—
6Proto-Indo-Europeanḱewh₁-to swell; to be strong
Every word from Proto-Indo-European ḱewh₁- →Every word from Proto-Indo-European ku-m-olo →Every word from Latin cumulus →