Where does “-er” come from?

-er (Middle High German) comes from Old Dutch -iro, from Proto-Bantu ì- — Class 5 noun prefix.

Ancestry of “-er”, step by step

StepLanguageWordMeaning
1Old Dutch-iro—
2Proto-Bantuì-Class 5 noun prefix

Words derived from “-er”

Every word from Proto-Bantu ì- →Every word from Old Dutch -iro →