Where does “ketur-” come from?

ketur- (Proto-Balto-Slavic) comes from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.

Ancestry of “ketur-”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeankʷetwóresfour
2Proto-Indo-Europeankʷe-and

Words derived from “ketur-”

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