Where does “κοροϊδεύω” come from?

κοροϊδεύω (Greek) comes from Greek κορόιδο, from Greek κουρόγιδο, from Greek γίδι, from Byzantine Greek γίδιν, from Ancient Greek αἰγίδιον, from Ancient Greek αἴξ, from Proto-Indo-European h₂eyǵ- — goat; oak.

κοροϊδεύω (Greek): mock, ridicule, tease, make fun of; dupe, fool,...

Definitions

mock, ridicule, tease, make fun of; dupe, fool,...

Ancestry of “κοροϊδεύω”, step by step

Step	Language	Word	Meaning
1	Greek	κορόιδο	dupe, sucker; fall guy
2	Greek	κουρόγιδο	—
3	Greek	γίδι	kid, young goat
4	Byzantine Greek	γίδιν	—
5	Ancient Greek	αἰγίδιον	kid, young goat
6	Ancient Greek	αἴξ	goat; a kind of waterfowl, possibly a goose; "In...
7	Proto-Indo-European	h₂eyǵ-	goat; oak

Every word from Proto-Indo-European h₂eyǵ- →Every word from Ancient Greek αἴξ →Every word from Ancient Greek αἰγίδιον →