Where does “slupen” come from?
slupen (Middle Dutch) comes from Old Dutch slūpan, from Proto-West Germanic *sleupan, from Proto-Germanic sleupaną, from Proto-Indo-European slewb(ʰ)- — to slip, glide.
slupen (Middle Dutch) comes from Old Dutch slūpan, from Proto-West Germanic *sleupan, from Proto-Germanic sleupaną, from Proto-Indo-European slewb(ʰ)- — to slip, glide.