There are 5 14-letter words that start with 'exte'.
| extemporaneity | extemporaneous | 
| extendednesses | extensionality | 
| exterminations | |
Note: These 5 14-letter words that start with 'exte' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with exter, exten, extem.
6-letter words start with 'exte' (3)