fiendishfrenziedfrighteningfrenetic
* bluff * brief
FLY
Fennel is a vegetable. It begins with the letter f.
Four letter adjectives that begin with the letter f:fairfakefastfinefiveflatfoulfourfreefull
flotilla
It means using profanity- specifically a word that begins with F that means sexual intercourse.
facts
formidable
flyover
The longest word in the Oxford dictionary that begins with 'f' is floccipaucinihilipilification. -29 letters.
Fog is a weather related word. It begins with the letter f.
Forsooth
fake
justunfuf
friendly
The answer is fail.