An Etymological Dictionary of the German Language/rasen

by Friedrich Kluge

rasen, vb., ‘to rave, rage,’ from MidHG. rasen (rare), ‘to storm, rave’; corresponding to LG. rasen, Du. razen. It is usually thought that the word was borrowed from LG., since it is not found in HG. till the end of the 13th cent. Allied to AS. râsettan, ‘to rave,’ rœ̂san, ‘to make a violent attack,’ rœs, ‘attack, charge’ (comp. E. race), OIc. rás, ‘race, running,’ and rasa, ‘to rush headlong.’