Where does “s-” come from?
s- (Javanese) comes from Old Javanese sa-, from Proto-Malayo-Polynesian əsa, from Proto-Austronesian *əsa, from Proto-Oceanic *isa.
Ancestry of “s-”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old Javanese | sa- | — |
| 2 | Proto-Malayo-Polynesian | əsa | one |
| 3 | Proto-Austronesian | *əsa | — |
| 4 | Proto-Oceanic | *isa | — |