An Etymological Dictionary of the German Language/-falt

by Friedrich Kluge

-falt, -fältig, adj. suffix, ‘-fold,’ from MidHG. -valt, OHG. falt; comp. Goth. -falþs, AS. -feald, E. -fold, OIc. -faldr; a common Teut. suffix in the formation of multiplicatives; it corresponds to Gr. πλάσιος in δι-πλάσιος, &c. (also δίπαλτος, ‘twofold’), for pltios, with which -falt seems to be primit. cognate. See falten, and Einfalt under ein.