Where does “zwalf” come from?

zwalf (Dutch) comes from Middle Dutch swalwe, from Old Dutch swalwa, from Proto-Germanic swalwǭ — swallow.

Ancestry of “zwalf”, step by step

StepLanguageWordMeaning
1Middle Dutchswalwe—
2Old Dutchswalwa—
3Proto-Germanicswalwǭswallow

Words derived from “zwalf”

Every word from Proto-Germanic swalwǭ →Every word from Old Dutch swalwa →Every word from Middle Dutch swalwe →