Where does “dourioù” come from?

dourioù (Breton) comes from Breton dour, from Proto-Brythonic duβr, from Proto-Celtic dubros, from Proto-Indo-European dʰubʰrós, from Proto-Indo-European dʰewbʰ-, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

Definitions

Ancestry of “dourioù”, step by step

StepLanguageWordMeaning
1Bretondourwater; rain, tears, sweat, saliva
2Proto-Brythonicduβrwater
3Proto-Celticdubrosdark; water
4Proto-Indo-Europeandʰubʰrósdeep
5Proto-Indo-Europeandʰewbʰ-deep
6Proto-Indo-Europeandʰewh₂-smoke; mist, haze
Every word from Proto-Indo-European dʰewh₂- →Every word from Proto-Indo-European dʰewbʰ- →Every word from Proto-Indo-European dʰubʰrós →