There are 21 words that start with 'suck'.
| suck | sucks | sucky |
| sucked | sucker | suckle |
| suckers | suckier | sucking |
| suckled | suckler | suckles |
| suckered | suckfish | suckiest |
| sucklers | suckless | suckling |
| suckering | sucklings | suckfishes |
Note: These 21 words that start with 'suck' are found from the USA & Canada version of the tournament Scrabble word list.