There are 6 14-letter words that start with 'pref'.
| prefabricating | prefabrication |
| preferentially | prefigurations |
| prefigurements | preformulating |
Note: These 6 14-letter words that start with 'pref' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with prefi, prefa, prefe, prefo, prefr, prefl, prefu.
6-letter words start with 'pref' (3)