There are 11 words that start with 'capsu'.
| capsule | capsular | capsuled | 
| capsules | capsulate | capsuling | 
| capsulize | capsulated | capsulized | 
| capsulizes | capsulizing | |
Note: These 11 words that start with 'capsu' are found from the USA & Canada version of the tournament Scrabble word list.