Where does “εγώ” come from?

εγώ (Pontic Greek) comes from Ancient Greek ἐγώ, from Proto-Hellenic *egṓ, from Proto-Indo-European éǵh₂ — I.

εγώ (Pontic Greek): I

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	ἐγώ	first person singular personal pronoun: I, me, my
2	Proto-Hellenic	*egṓ	—
3	Proto-Indo-European	éǵh₂	I

εγώ — Etymology, Origin & Word History | Etymology Explorer