An Etymological Dictionary of the German Language/schlemmen

by Friedrich Kluge

schlemmen, ‘to carouse,’ from late MidHG. slęmmen, ‘to squander,’ allied to late MidHG. slamp, ‘carouse’; comp. Du. slemp, ‘dainty meal,’ slempen, ‘to carouse,’ with which Schlempe, f., ‘rinsings,’ is connected. The term is wanting in the other Teut. languages.