Ffronc, n. a cage; a hut
Ffros, n. a quick rise, a toss
Ffrost, n. a vaunt; ostentation
Ffrostiad, n. a vaunting
Ffrostio, v. to vaunt, to boast
Ffrostiwr, a bragger, a boaster
Ffrowyll, n. outrage, tumult
Ffrowyllu, v. to do outrage
Ffrowys, a. turbulent; terrible
Ffrwch, n. violent ruption