Where does “pagkatapos” come from?

pagkatapos (Bikol Central) comes from Tagalog pagka, from Tagalog pagkamakabagunsakupin — neocolonialism.

Ancestry of “pagkatapos”, step by step

pagkatapos traces back through two separate lines of ancestry.

via Tagalog pagka

StepLanguageWordMeaning
1Tagalogpagkaif
2Tagalogpagkamakabagunsakupinneocolonialism

via Bikol Central tapos

StepLanguageWordMeaning
1Bikol Centraltapos—
Every word from Tagalog pagkamakabagunsakupin →Every word from Tagalog pagka →