Where does “ρίχνω” come from?

ρίχνω (Byzantine Greek) comes from Ancient Greek ῥίπτω, from Proto-Indo-European wreyp-.

Ancestry of “ρίχνω”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ῥίπτω	To throw, cast, hurl; To throw or toss around; To...
2	Proto-Indo-European	wreyp-	—

ρίχνω — Etymology, Origin & Word History | Etymology Explorer