Where does “cynffonddu” come from?

cynffonddu (Welsh) comes from Welsh du, from Proto-Brythonic duβ, from Proto-Celtic dubus, from Proto-Indo-European dʰewbʰ-, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

cynffonddu (Welsh): black-tailed

Definitions

  1. black-tailed

Ancestry of “cynffonddu”, step by step

cynffonddu traces back through two separate lines of ancestry.

via Welsh du

StepLanguageWordMeaning
1Welshdublack
2Proto-Brythonicduβblack
3Proto-Celticdubusblack
4Proto-Indo-Europeandʰewbʰ-deep
5Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via Welsh cynffon

StepLanguageWordMeaning
1Welshcynffontail
Every word from Proto-Indo-European dʰewh₂-