There are 16 words that start with 'pith'.
| pith | piths |
| pithy | pithed |
| pithead | pithier |
| pithily | pithing |
| pitheads | pithiest |
| pithless | pithecoid |
| pithiness | pithinesses |
| pithecanthropi | pithecanthropus |
Note: These 16 words that start with 'pith' are found from the USA & Canada version of the tournament Scrabble word list.