There are 15 words that start with 'slap'.
| slap | slaps | slapped |
| slapper | slapdash | slapjack |
| slappers | slapping | slaphappy |
| slapjacks | slapstick | slapdashes |
| slapsticks | slaphappier | slaphappiest |
Note: These 15 words that start with 'slap' are found from the USA & Canada version of the tournament Scrabble word list.