There are 10 words that start with 'clown'.
| clown | clowns | 
| clowned | clownery | 
| clowning | clownish | 
| clowneries | clownishly | 
| clownishness | clownishnesses | 
Note: These 10 words that start with 'clown' are found from the USA & Canada version of the tournament Scrabble word list.