There are 16 words that start with 'sell'.
| sell | selle | sells | 
| seller | selles | sellers | 
| selling | selloff | sellout | 
| sellable | selloffs | sellouts | 
| sellotape | sellotaped | sellotapes | 
| sellotaping | ||
Note: These 16 words that start with 'sell' are found from the USA & Canada version of the tournament Scrabble word list.