- defend
- defended
- defied
- define
- defined
- definite
- definitive
- deft
- deified
- diffident
- edified
- effete
- feed
- feet
- feint
- feinted
- fend
- fended
- fete
- feted
- fetid
- fief
- fiend
- fife
- fifed
- fifteen
- find
- fine
- fined
- finite
- finned
- fitted
- five
- identified
- indefinite
- infinite
- infinitive
- tiff
- vivified