There are 12 9-letter words that start with 'exte'.
| extempore | extenders | extending | 
| extensile | extension | extensity | 
| extensive | extensors | extenuate | 
| exteriors | extermine | externals | 
Note: These 12 9-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)