Where does “Gornai” come from?

Gornai (Old French) comes from Latin -acum, from Latin -acea, from Latin -aceus, from Latin -eus, from Ancient Greek -εῖος, from Proto-Indo-European -iHwós, from Proto-Indo-European -wós — Creates adjectives from verb stems.

Ancestry of “Gornai”, step by step

StepLanguageWordMeaning
1Latin-acum
2Latin-aceanominative feminine singular of -āceus;...
3Latin-aceus-aceous; resembling, having the nature of,...
4Latin-eusargentum + API → argenteus; ferrum + API →...
5Ancient Greek-εῖοςForms adjectives, usually with a meaning of "of"...
6Proto-Indo-European-iHwós
7Proto-Indo-European-wósCreates adjectives from verb stems
Every word from Proto-Indo-European -wós