Where does “ef” come from?
ef (Old Danish) comes from Old Norse ef, from Proto-Germanic jabai, from Proto-Indo-European ē- — then, at that time.
Ancestry of “ef”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old Norse | ef | if |
| 2 | Proto-Germanic | jabai | when, if |
| 3 | Proto-Indo-European | ē- | then, at that time |