There are 17 words that start with 'hyph'.
| hypha | hyphae | hyphal | 
| hyphen | hyphens | hyphemia | 
| hyphened | hyphenic | hyphemias | 
| hyphenate | hyphening | hyphenated | 
| hyphenates | hyphenless | hyphenating | 
| hyphenation | hyphenations | |
Note: These 17 words that start with 'hyph' are found from the USA & Canada version of the tournament Scrabble word list.