Where does “bertahuan” come from?

bertahuan (Indonesian) comes from Indonesian tahu, from Malay tahu, from Proto-Malayic tahu(ʔ), from Proto-Malayo-Polynesian taqu, from Proto-Austronesian Caqu — to know how, be able to.

Ancestry of “bertahuan”, step by step

bertahuan traces back through two separate lines of ancestry.

via Indonesian tahu

StepLanguageWordMeaning
1Indonesiantahuto know; tofu, specifically firm pressed fresh...
2Malaytahuto know; tofu, specifically firm pressed fresh...
3Proto-Malayictahu(ʔ)to know; be able to
4Proto-Malayo-Polynesiantaquto know how; be able to
5Proto-AustronesianCaquto know how, be able to

via Indonesian ber- -an

StepLanguageWordMeaning
1Indonesianber- -anintransitive verbal circumfix from verb with the meanings of
Every word from Proto-Austronesian CaquEvery word from Proto-Malayo-Polynesian taquEvery word from Proto-Malayic tahu(ʔ)