There are 12 words that start with 'porn'.
| porn | porno | 
| porns | porny | 
| pornos | pornier | 
| porniest | pornography | 
| pornographer | pornographic | 
| pornographers | pornographies | 
Note: These 12 words that start with 'porn' are found from the USA & Canada version of the tournament Scrabble word list.