Where does “-da” come from?

-da (Uneapa) comes from Proto-Oceanic *-da, from Proto-Malayo-Polynesian *-ta, from Proto-Austronesian *-ta, from Proto-Austronesian (i-)kita — we, us, our.

Ancestry of “-da”, step by step

StepLanguageWordMeaning
1Proto-Oceanic*-da—
2Proto-Malayo-Polynesian*-ta—
3Proto-Austronesian*-ta—
4Proto-Austronesian(i-)kitawe, us, our
Every word from Proto-Austronesian (i-)kita →Every word from Proto-Austronesian *-ta →Every word from Proto-Oceanic *-da →