There are 11 words that start with 'serp'.
| serpent | serpigo |
| serpents | serpigos |
| serpigoes | serpentine |
| serpigines | serpentines |
| serpiginous | serpentinely |
| serpiginously | |
Note: These 11 words that start with 'serp' are found from the USA & Canada version of the tournament Scrabble word list.