Where does “sa-” come from?

sa- (Old Malay) comes from Proto-Malayic sA-, from Proto-Malayic əsa, from Proto-Malayo-Chamic əsa, from Proto-Malayo-Sumbawan əsa, from Proto-Malayo-Polynesian əsa, from Proto-Austronesian *əsa, from Proto-Oceanic *isa.

Ancestry of “sa-”, step by step

StepLanguageWordMeaning
1Proto-MalayicsA-one
2Proto-Malayicəsa—
3Proto-Malayo-Chamicəsa—
4Proto-Malayo-Sumbawanəsa—
5Proto-Malayo-Polynesianəsaone
6Proto-Austronesian*əsa—
7Proto-Oceanic*isa—

Words derived from “sa-”

Every word from Proto-Oceanic *isa →Every word from Proto-Austronesian *əsa →Every word from Proto-Malayo-Polynesian əsa →