There are 3 14-letter words that start with 'est'.
| establishments | esterification | 
| estrogenically | |
Note: These 3 14-letter words that start with 'est' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with estr, esti, esta, este, esth, esto, estu.
5-letter words start with 'est' (2)