Where does “magrikas” come from?

magrikas (Bikol Central) comes from Bikol Central rikas, from Proto-Malayo-Polynesian *rikas.

Ancestry of “magrikas”, step by step

StepLanguageWordMeaning
1Bikol Centralrikas—
2Proto-Malayo-Polynesian*rikas—
Every word from Proto-Malayo-Polynesian *rikas →Every word from Bikol Central rikas →