flówan, to flow—flood, flow.
folgian, to go after—follow.
fón, to seize —fang, finger.
fót, the foot—foot, fetter, fetlock.
freón, to love—free, freedom, friend, friendship.
fretan, to gnaw—fret, fretful.
fugel, a bird—fowl, fowler, fowling-piece.
fúl, unclean—filth, filthy, foul, fulsome.
fullian, to whiten—full (to scour and thicken cloth in a mill), fuller, fuller's-earth.
fýr, fire—fiery, fireworks, bonfire.