Where does “(j)esmь” come from?

(j)esmь (Proto-Slavic) comes from Proto-Balto-Slavic esmi, from Proto-Indo-European h₁ésmi, from Proto-Indo-European h₁ēs- — to be.

Ancestry of “(j)esmь”, step by step

StepLanguageWordMeaning
1Proto-Balto-Slavicesmifirst-person singular present of *bū́ˀtei
2Proto-Indo-Europeanh₁ésmifirst-person singular present indicative of...
3Proto-Indo-Europeanh₁ēs-to be

Words derived from “(j)esmь

Every word from Proto-Indo-European h₁ēs-Every word from Proto-Indo-European h₁ésmiEvery word from Proto-Balto-Slavic esmi