Where does “griseous” come from?

griseous (English) comes from Latin griseus, from Latin -eus, from Ancient Greek -εῖος, from Proto-Indo-European -iHwós, from Proto-Indo-European -wós — Creates adjectives from verb stems.

griseous (English): Having a gray, mottled appearance

Definitions

Having a gray, mottled appearance

Ancestry of “griseous”, step by step

Step	Language	Word	Meaning
1	Latin	griseus	grey
2	Latin	-eus	argentum + API → argenteus; ferrum + API →...
3	Ancient Greek	-εῖος	Forms adjectives, usually with a meaning of "of"...
4	Proto-Indo-European	-iHwós	—
5	Proto-Indo-European	-wós	Creates adjectives from verb stems

Every word from Proto-Indo-European -wós →Every word from Latin -eus →Every word from Ancient Greek -εῖος →