Where does “Portiwgaleg” come from?

Portiwgaleg (Welsh) comes from Welsh -eg, from Middle Welsh -eg, from Proto-Celtic -ikos, from Proto-Indo-European -kos — Creates deadjectival and desubstantival...

Ancestry of “Portiwgaleg”, step by step

Step	Language	Word	Meaning
1	Welsh	-eg	a language, -ic, -ish; a science, a study,-y,...
2	Middle Welsh	-eg	—
3	Proto-Celtic	-ikos	belonging to; derived from; of or pertaining to
4	Proto-Indo-European	-kos	Creates deadjectival and desubstantival...

Every word from Proto-Indo-European -kos →

Portiwgaleg — Etymology, Origin & Word History | Etymology Explorer