Where does “tergagai” come from?

tergagai (Indonesian) comes from Indonesian ter-, from Malay ter-, from Classical Malay ter-, from Proto-Malayic tAr-, from Proto-Malayo-Polynesian taʀ-, from Proto-Austronesian taʀ-.

Ancestry of “tergagai”, step by step

StepLanguageWordMeaning
1Indonesianter-for passive intransitive verb, agentless actions,...
2Malayter-agentless actions, such as those which are...
3Classical Malayter-for passive intransitive verb, agentless actions,...
4Proto-MalayictAr-—
5Proto-Malayo-Polynesiantaʀ-—
6Proto-Austronesiantaʀ-—
Every word from Proto-Austronesian taʀ- →Every word from Indonesian ter- →Every word from Malay ter- →