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