There are 17 words that start with 'ferre'.
| ferrel | ferret | ferrels |
| ferrets | ferrety | ferreled |
| ferreous | ferreted | ferreter |
| ferreling | ferrelled | ferreters |
| ferreting | ferredoxin | ferrelling |
| ferretings | ferredoxins | |
Note: These 17 words that start with 'ferre' are found from the USA & Canada version of the tournament Scrabble word list.