Where does “muna” come from?

muna (Bikol Central) comes from Proto-Malayo-Polynesian *um-unah, from Proto-Malayo-Polynesian *unah, from Proto-Austronesian *(q)uNah.

Ancestry of “muna”, step by step

StepLanguageWordMeaning
1Proto-Malayo-Polynesian*um-unah—
2Proto-Malayo-Polynesian*unah—
3Proto-Austronesian*(q)uNah—
Every word from Proto-Austronesian *(q)uNah →Every word from Proto-Malayo-Polynesian *unah →Every word from Proto-Malayo-Polynesian *um-unah →