Where does “du” come from?
du (Breton) comes from Proto-Brythonic duβ, from Proto-Celtic dubus, from Proto-Indo-European dʰewbʰ-, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.
du (Breton): black; swollen; starved
Ancestry of “du”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Brythonic | duβ | black |
| 2 | Proto-Celtic | dubus | black |
| 3 | Proto-Indo-European | dʰewbʰ- | deep |
| 4 | Proto-Indo-European | dʰewh₂- | smoke; mist, haze |