Where does “*sum” come from?
*sum (Proto-West Germanic) comes from Proto-Germanic sumaz, from Proto-Indo-European sem- — together, one.
Ancestry of “*sum”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Germanic | sumaz | some , a certain; some, certain |
| 2 | Proto-Indo-European | sem- | together, one |