There are 20 words that start with 'seat'.
| seat | seats | seated |
| seater | seaters | seating |
| seatback | seatbelt | seatings |
| seatless | seatmate | seatrain |
| seatrout | seatwork | seatbacks |
| seatbelts | seatmates | seatrains |
| seatrouts | seatworks | |
Note: These 20 words that start with 'seat' are found from the USA & Canada version of the tournament Scrabble word list.