Where does “sind” come from?

sind (Middle English) comes from Old English sind, from Proto-Germanic sindi, from Proto-Germanic wesaną, from Proto-Indo-European h₁ésti, from Proto-Indo-European h₁es- — to be.

Ancestry of “sind”, step by step

StepLanguageWordMeaning
1Old Englishsindall persons plural present indicative of wesan
2Proto-Germanicsindi—
3Proto-Germanicwesanąto be; to remain; to exist
4Proto-Indo-Europeanh₁éstito be
5Proto-Indo-Europeanh₁es-to be
Every word from Proto-Indo-European h₁es- →Every word from Proto-Indo-European h₁ésti →Every word from Proto-Germanic wesaną →