Where does “fer-” come from?

fer- (Old Norse) comes from Proto-Germanic feþur-, from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.

Ancestry of “fer-”, step by step

StepLanguageWordMeaning
1Proto-Germanicfeþur-four, pertaining to four
2Proto-Indo-Europeankʷetwóresfour
3Proto-Indo-Europeankʷe-and

Words derived from “fer-”

Every word from Proto-Indo-European kʷe- →Every word from Proto-Indo-European kʷetwóres →Every word from Proto-Germanic feþur- →