There are 12 words that start with 'subsp'.
| subspace | subspaces |
| subspecies | subspecific |
| subspecialty | subspecialist |
| subspecialize | subspecialists |
| subspecialized | subspecializes |
| subspecialties | subspecializing |
Note: These 12 words that start with 'subsp' are found from the USA & Canada version of the tournament Scrabble word list.