Where does “ngejatuhin” come from?

ngejatuhin (Indonesian) comes from Indonesian nge- -in, from Indonesian nge-, from Betawi nge-, from Sundanese n-, from Proto-Malayo-Polynesian *maN- — inflectional prefix marking actor voice.

Ancestry of “ngejatuhin”, step by step

ngejatuhin traces back through two separate lines of ancestry.

via Indonesian nge- -in

StepLanguageWordMeaning
1Indonesiannge- -in
2Indonesiannge-used to mark active subject on a verb, except in direct imperative sentence
3Betawinge-used to mark active subject on a verb
4Sundanesen-active verb-forming prefix
5Proto-Malayo-Polynesian*maN-inflectional prefix marking actor voice

via Indonesian jatuh

StepLanguageWordMeaning
1Indonesianjatuhto fall
2Malayjatuhto fall; to drop to descend freely by the force of gravity
Every word from Proto-Malayo-Polynesian *maN-