Where does “fiūwertīne” come from?
fiūwertīne (Old Frisian) comes from Proto-Germanic fedurtehun, from Proto-Germanic fedwōr, from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.
Ancestry of “fiūwertīne”, step by step
Words derived from “fiūwertīne”