Where does “isas” come from?

isas (Proto-Baltic) comes from Proto-Balto-Slavic insas, from Proto-Indo-European h₁eysh₂- — to strengthen; to propel.

Ancestry of “isas”, step by step

StepLanguageWordMeaning
1Proto-Balto-Slavicinsas—
2Proto-Indo-Europeanh₁eysh₂-to strengthen; to propel

Words derived from “isas”

Every word from Proto-Indo-European h₁eysh₂- →Every word from Proto-Balto-Slavic insas →