There are 14 words that start with 'proge'.
| progeny | progeria |
| progenies | progerias |
| progestin | progenitor |
| progestins | progenitors |
| progestogen | progesterone |
| progestogens | progesterones |
| progestogenic | progestational |
Note: These 14 words that start with 'proge' are found from the USA & Canada version of the tournament Scrabble word list.