Where does “-in” come from?
-in (German) comes from Latin -īnus, from Proto-Italic -īnos, from Proto-Indo-European -iHnos, from Proto-Indo-European -no- — adjectival suffix.
Ancestry of “-in”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Latin | -īnus | — |
| 2 | Proto-Italic | -īnos | of/belonging to |
| 3 | Proto-Indo-European | -iHnos | Creates adjectives of materials |
| 4 | Proto-Indo-European | -no- | adjectival suffix |