Where does “maglubog” come from?

maglubog (Bikol Central) comes from Bikol Central lubog, from Tagalog lubog, from Proto-Malayo-Polynesian *ləbuʀ.

Ancestry of “maglubog”, step by step

StepLanguageWordMeaning
1Bikol Centrallubog—
2Tagaloglubogsunken; sunk; immersed in water
3Proto-Malayo-Polynesian*ləbuʀ—
Every word from Proto-Malayo-Polynesian *ləbuʀ →Every word from Tagalog lubog →Every word from Bikol Central lubog →