There are 18 words that start with 'seal'.
| seal | seals | sealed |
| sealer | sealant | sealers |
| sealery | sealift | sealing |
| sealable | sealants | sealifts |
| seallike | sealskin | sealeries |
| sealifted | sealskins | sealifting |
Note: These 18 words that start with 'seal' are found from the USA & Canada version of the tournament Scrabble word list.