There are 15 words that start with 'exse'.
| exsect | exsert | exsects | 
| exserts | exsecant | exsected | 
| exserted | exsecants | exsecting | 
| exsection | exsertile | exserting | 
| exsertion | exsections | exsertions | 
Note: These 15 words that start with 'exse' are found from the USA & Canada version of the tournament Scrabble word list.