finally fast, frozen frost, fat feet, feeling fine, freaking freezing....
funny
Forest
Behalfbehoofbeliefcutoffengulf.
Safari?
forceful
When a word that starts with "f" is frequently repeated in a sentence, it is known as "alliteration." This literary device adds rhythm and emphasis to the text.
The word "fireflies" contains one instance of alliteration with the repeated "f" sound at the beginning of both syllables.
faults
Ferret.
Faenza, Foggia
fishes
A 'footer'.