Where does “ngebangkang” come from?

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

Ancestry of “ngebangkang”, step by step

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