Where does “-um-” come from?

-um- (Nias) comes from Proto-Malayo-Polynesian -um-, from Proto-Austronesian -um- — inflectional infix marking actor voice.

-um- (Nias): intransitive verb affix

Definitions

  1. intransitive verb affix

Ancestry of “-um-”, step by step

StepLanguageWordMeaning
1Proto-Malayo-Polynesian-um-inflectional affix marking actor voice
2Proto-Austronesian-um-inflectional infix marking actor voice
Every word from Proto-Austronesian -um- →Every word from Proto-Malayo-Polynesian -um- →