Where does “oefen” come from?
oefen (Dutch) comes from Dutch oefenen, from Middle Dutch oefenen, from Middle Dutch oeven, from Old Dutch uoven, from Proto-Germanic ōbijaną — to perform, practice.
oefen (Dutch) comes from Dutch oefenen, from Middle Dutch oefenen, from Middle Dutch oeven, from Old Dutch uoven, from Proto-Germanic ōbijaną — to perform, practice.