There are 16 words that start with 'spong'.
| sponge | spongy | sponged |
| sponger | sponges | spongin |
| spongers | spongier | spongily |
| sponging | spongins | spongiest |
| spongeware | sponginess | spongewares |
| sponginesses | ||
Note: These 16 words that start with 'spong' are found from the USA & Canada version of the tournament Scrabble word list.