Where does “dúghorm” come from?

dúghorm (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.

dúghorm (Irish): dark blue, navy blue

Definitions

  1. dark blue, navy blue

Ancestry of “dúghorm”, step by step

dúghorm traces back through two separate lines of ancestry.

via Irish dubh

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

via Irish gorm

StepLanguageWordMeaning
1Irishgormblue; black; azure
2Old Irishgormblue
3Proto-Celticgurmosdun, dark, blue
Every word from Proto-Indo-European dʰewh₂- →Every word from Proto-Indo-European dʰewbʰ- →Every word from Proto-Celtic dubus →