The story
- Proto-Germanic · inherited from*þūsundīfalþaz
- Old English · inherited fromþūsendfeald
- Middle English · inherited fromthousendfold
- English todaythousandfold
From Middle English thousendfold, from Old English þūsendfeald, from Proto-Germanic *þūsundīfalþaz, corresponding to thousand + -fold. Cognate with Dutch duizendvoud, duizendvoudig, German tausendfältig, Danish tusindfold, Swedish tusendfalt, tusendfaltig, Icelandic þúsundfalt.
Etymology from Wiktionary, CC BY-SA 4.0.