For, fan, fog
Finalize, finishing, frolicking
firrefighter
Some three letter words with F in the middle are aft, off, oft, and eft (a young newt).
Scrabble words: Beginning with F:6 letter words:FriezeFrizzy5 letter words:FicheFritzFuggyFuzzy4 letter words:FealFernFiceFiefFifeFilaFirnFixtFlicFloeFlogFociFrizFroeFutzFuze3 letter words:FadFagFanFarFasFatFaxFayFedFeeFehFemFenFerFesFetFeuFewFeyFezFibFidFieFigFilFinFirFitFixFizFluFlyFobFoeFogFohFonFopForFouFoxFoyFroFryFubFudFugFunFur
Some words that start and end with letter F are:fallofffireproofflagstafffluffflyleaffoodstufffoolproof
faithfancyfadedfaultfelonfencefeastfiendfifthfiredfiberfilthfinchfirstfloatflossfloorfleetflingflaskflashflickflackflirtflintfliesflankflamefluteflushfloodfoundforthfriskframefreshFrenchfrozefriedfrockfrillfrontfruitfreedfunkyfunnyfurry
For,from,fin,fine,fantasic just,jail,jump
Frequency.
finance
firefox
Faint, fault, fight, fleet, flint, flirt, frost and fruit are 5 letter words. They start with F and end with T.
elf oaf ref