zwartwerk (Dutch) comes from Dutch werk, from Middle Dutch werc, from Old Dutch werk, from Proto-West Germanic werk, from Proto-Germanic werką, from Proto-Indo-European wérǵom, from Proto-Indo-European werǵ- — to make.
zwartwerk (Dutch): undeclared work
Definitions
undeclared work
Ancestry of “zwartwerk”, step by step
zwartwerk traces back through two separate lines of ancestry.