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
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Balto-Slavic | insas | — |
| 2 | Proto-Indo-European | h₁eysh₂- | to strengthen; to propel |