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 dictionary that begins with the letter "f" is "floccinaucinihilipilification." This word is a noun and is defined as the action or habit of estimating something as worthless. It consists of 29 letters and is considered one of the longest non-technical words in the English language.
Fog is a weather related word. It begins with the letter f.
Forsooth
fake
justunfuf
friendly
The answer is fail.