Where does “dú-” come from?

dú- (Irish) comes from Irish dubh, from Old Irish dub, from Proto-Celtic dubus, from Proto-Indo-European dʰewbʰ-, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

dú- (Irish): black, dark; great, intense; evil

Definitions

  1. black, dark; great, intense; evil

Ancestry of “dú-”, step by step

StepLanguageWordMeaning
1Irishdubhblack; black-haired
2Old Irishdubblack; morally dark, dire, gloomy, melancholy;...
3Proto-Celticdubusblack
4Proto-Indo-Europeandʰewbʰ-deep
5Proto-Indo-Europeandʰewh₂-smoke; mist, haze

Words derived from “dú-”

Every word from Proto-Indo-European dʰewh₂- →Every word from Proto-Indo-European dʰewbʰ- →Every word from Proto-Celtic dubus →
dú- — Etymology, Origin & Word History | Etymology Explorer