Where does “deugain” come from?

deugain (Welsh) comes from Welsh ugain, from Old Welsh uceint, from Proto-Brythonic ʉgėnt, from Proto-Celtic wikantī, from Proto-Indo-European h₁wih₁ḱm̥t, from Proto-Indo-European dwi(h₁)dḱm̥ti — two tens; two decades; twenty; two-ten.

deugain (Welsh): forty, two score; forty

Definitions

  1. forty, two score; forty

Ancestry of “deugain”, step by step

deugain traces back through two separate lines of ancestry.

via Welsh ugain

StepLanguageWordMeaning
1Welshugaintwenty; score
2Old Welshuceint
3Proto-Brythonicʉgėnt
4Proto-Celticwikantītwenty
5Proto-Indo-Europeanh₁wih₁ḱm̥t
6Proto-Indo-Europeandwi(h₁)dḱm̥titwo tens; two decades; twenty; two-ten

via Proto-Indo-European deu-

StepLanguageWordMeaning
1Proto-Indo-Europeandeu-lack, fail; to injure, destroy, burn; to do,...
2Middle Welshdeutwo
3Proto-Brythonic*dowtwo
4Proto-Celtic*duwotwo
5Proto-Indo-Europeandwóh₁two

Words derived from “deugain

Every word from Proto-Indo-European dwi(h₁)dḱm̥tiEvery word from Proto-Indo-European h₁wih₁ḱm̥tEvery word from Proto-Celtic wikantī