Where does “Ἄπις” come from?

Ἄπις (Ancient Greek) comes from Coptic ϩⲁⲡⲉ, from Egyptian ḥp — the god Apis.

Ancestry of “Ἄπις”, step by step

Step	Language	Word	Meaning
1	Coptic	ϩⲁⲡⲉ	the Apis bull, a bull worshipped as a herald of the gods (first Ptah, then Osiris, then Atum)
2	Egyptian	ḥp	the god Apis