Where does “keu” come from?

keu (Middle Welsh) comes from Proto-Vietic kaw, from Dutch kauwen, from Middle Dutch couwen, from Old Dutch kiuwan, from Proto-West Germanic keuwan, from Proto-Germanic kewwaną, from Proto-Indo-European ǵyewh₁- — to chew.

Ancestry of “keu”, step by step

StepLanguageWordMeaning
1Proto-Vietickaw—
2Dutchkauwento chew
3Middle Dutchcouwento chew
4Old Dutchkiuwanto chew
5Proto-West Germanickeuwanto chew
6Proto-Germanickewwanąto chew
7Proto-Indo-Europeanǵyewh₁-to chew
Every word from Proto-Indo-European ǵyewh₁- →Every word from Proto-Germanic kewwaną →Every word from Proto-West Germanic keuwan →