Where does “memfasihkan” come from?

memfasihkan (Malay) comes from Malay fasih, from Malay lidah, from Proto-Malayic *dilah, from Proto-Malayo-Polynesian dilaq, from Proto-Austronesian dilaq, from Proto-Austroasiatic *dilaq.

Ancestry of “memfasihkan”, step by step

Step	Language	Word	Meaning
1	Malay	fasih	fluent
2	Malay	lidah	tongue organ
3	Proto-Malayic	*dilah	—
4	Proto-Malayo-Polynesian	dilaq	tongue
5	Proto-Austronesian	dilaq	—
6	Proto-Austroasiatic	*dilaq	—

Every word from Proto-Austroasiatic *dilaq →Every word from Proto-Austronesian dilaq →Every word from Proto-Malayo-Polynesian dilaq →