Where does “ευρύς” come from?

ευρύς (Greek) comes from Ancient Greek εὐρύς, from Proto-Hellenic *eurús.

ευρύς (Greek): wide

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	εὐρύς	wide, broad, spacious, especially of heaven,...
2	Proto-Hellenic	*eurús	—

ευρύς — Etymology, Origin & Word History | Etymology Explorer