There are 15 words that start with 'excep'.
| except | excepts | 
| excepted | excepting | 
| exception | exceptive | 
| exceptions | exceptional | 
| exceptionable | exceptionably | 
| exceptionally | exceptionalism | 
| exceptionality | exceptionalisms | 
| exceptionalness | |
Note: These 15 words that start with 'excep' are found from the USA & Canada version of the tournament Scrabble word list.