finally fast, frozen frost, fat feet, feeling fine, freaking freezing....
Four French friends found fifty francs.
funny
Behalfbehoofbeliefcutoffengulf.
Forest
Safari?
forceful
faults
Ferret.
Faenza, Foggia
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.
fishes
A 'footer'.