There are 14 words that start with 'porp'.
| porphyry | porpoise |
| porphyria | porphyric |
| porphyrin | porpoised |
| porpoises | porphyrias |
| porphyries | porphyrins |
| porpoising | porphyritic |
| porphyropsin | porphyropsins |
Note: These 14 words that start with 'porp' are found from the USA & Canada version of the tournament Scrabble word list.