Where does “ἐκεῖθι” come from?

ἐκεῖθι (Ancient Greek) comes from Ancient Greek ἐκεῖ, from Ancient Greek ἐκεῖνος, from Ancient Greek ἐ-, from Proto-Indo-European h₁e-.

ἐκεῖθι (Ancient Greek): there

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	ἐκεῖ	demonstrative adverb there, in that place;...
2	Ancient Greek	ἐκεῖνος	that
3	Ancient Greek	ἐ-	augment
4	Proto-Indo-European	h₁e-	—