Where does “zwavelvrij” come from?

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

zwavelvrij (Dutch): sulfurless, sulfur-free

Definitions

  1. sulfurless, sulfur-free

Ancestry of “zwavelvrij”, step by step

StepLanguageWordMeaning
1Dutchzwavelsulfur
2Dutchzwalf—
3Middle Dutchswalwe—
4Old Dutchswalwa—
5Proto-Germanicswalwǭswallow
Every word from Proto-Germanic swalwǭ →Every word from Old Dutch swalwa →Every word from Middle Dutch swalwe →