There are 4 12-letter words that start with 'down'.
| downloadable | downshifting | downtrending | 
| downwardness | ||
Note: These 4 12-letter words that start with 'down' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with downs, downt, downl, downh, downp, downw, downb, downf, downr, downc, downi, downg, downz, downe, downd, downy.
5-letter words start with 'down' (2)