Where does “-eð” come from?

-eð (Middle Welsh) comes from Proto-Celtic *-iyā, from Proto-Indo-European -éh₂.

Ancestry of “-eð”, step by step

StepLanguageWordMeaning
1Proto-Celtic*-iyāForms abstract nouns from adjectives
2Proto-Indo-European-éh₂—

Words derived from “-eð”

Every word from Proto-Indo-European -éh₂ →Every word from Proto-Celtic *-iyā →