Where does “gyddflas” come from?

gyddflas (Welsh) comes from Welsh glas, from English glass, from Scottish Gaelic glas, from Middle Irish glas, from Old Irish glas, from Proto-Celtic glastos, from Proto-Indo-European ǵʰl̥h₃stós, from Proto-Indo-European ǵʰelh₃- — to flourish; green, yellow.

gyddflas (Welsh): blue-throated

Definitions

  1. blue-throated

Ancestry of “gyddflas”, step by step

gyddflas traces back through two separate lines of ancestry.

via Welsh glas

StepLanguageWordMeaning
1Welshglasblue
2EnglishglassAn amorphous solid, often transparent substance...
3Scottish Gaelicglasgreen; grey; lock
4Middle Irishglas
5Old Irishglasgreen, greenish; blue, green-blue, grey-blue; the...
6Proto-Celticglastosgreen, blue
7Proto-Indo-Europeanǵʰl̥h₃stós
8Proto-Indo-Europeanǵʰelh₃-to flourish; green, yellow

via Welsh gwddf

StepLanguageWordMeaning
1Welshgwddfneck
Every word from Proto-Indo-European ǵʰelh₃-