There are 17 words that start with 'fett'.
| fetted | fetter | fettle | 
| fetters | fetting | fettled | 
| fettles | fettered | fetterer | 
| fettling | fetterers | fettering | 
| fettlings | fettucine | fettucini | 
| fettuccine | fettuccini | |
Note: These 17 words that start with 'fett' are found from the USA & Canada version of the tournament Scrabble word list.