An Etymological Dictionary of the German Language/letzen

by Friedrich Kluge

letzen, vb., ‘to injure,’ from lętzen, OHG. lęzzen, ‘to check, stop, hinder, damage, hurt’; corresponding to Goth. latjan, galatjan, ‘to stop, check,’ AS. lęttan, E. to let; a common Teut. denominative from the adj. lata-; comp. laß and lassen.