Where does “cwmwl” come from?
cwmwl (Welsh) comes 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.
cwmwl (Welsh): cloud
Ancestry of “cwmwl”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Middle Welsh | cwmwl | — |
| 2 | Proto-Brythonic | kuml | cloud |
| 3 | Latin | cumulus | heap, pile; surplus; summit |
| 4 | Proto-Indo-European | ku-m-olo | — |
| 5 | Proto-Indo-European | ḱewh₁- | to swell; to be strong |