Where does “είμαι” come from?

είμαι (Greek) comes from Byzantine Greek εἶμαι, from Ancient Greek εἰμί, from Proto-Hellenic ehmi, from Proto-Indo-European h₁ésmi, from Proto-Indo-European h₁ēs- — to be.

είμαι (Greek): be; there is, there are, exist; support, be a...

Definitions

be; there is, there are, exist; support, be a...

Ancestry of “είμαι”, step by step

Step	Language	Word	Meaning
1	Byzantine Greek	εἶμαι	to be
2	Ancient Greek	εἰμί	To be, exist; live; To be; it is possible
3	Proto-Hellenic	ehmi	to be
4	Proto-Indo-European	h₁ésmi	first-person singular present indicative of...
5	Proto-Indo-European	h₁ēs-	to be

Every word from Proto-Indo-European h₁ēs- →Every word from Proto-Indo-European h₁ésmi →Every word from Proto-Hellenic ehmi →