There are 16 words that start with 'dispro'.
| disproof | disprove | 
| disproofs | disproval | 
| disproved | disproven | 
| disprover | disproves | 
| disprovals | disprovers | 
| disproving | disprovable | 
| disproportion | disproportions | 
| disproportional | disproportioned | 
Note: These 16 words that start with 'dispro' are found from the USA & Canada version of the tournament Scrabble word list.