An Etymological Dictionary of the German Language/falten

by Friedrich Kluge

falten, vb.. ‘to fold, plait, knit (the brow),’ from the equiv. MidHG. valten, OHG. faltan, faldan; corresponds to Goth falþan, OIc. falda, AS. fealdan, E. to fold; the Teut. root is falþ, ‘to fold,’ pre-Teut. plt, with which comp. OSlov. pletą. plesti, ‘to twist,’ Gr. διπλάσιος, ‘twofold’ (see under -falt), Sans. puṭa, ‘fold,’ for plta.