Ffaethu, v. to make luxuriant
Ffaethus, a. luxuriant, mellow
Ffaethuso, v. to fecundate
Ffaethusrwydd, n. mellowness
Ffag, n. what tends to unite
Ffagl, n. a blaze, a flame
Ffagliad, n. a blazing
Ffaglog, a. blazing, flaming
Ffaglu, v. to blaze, to flame, to conflagrate
Ffaglwr, n. a blazer, one who bears a blaze; an incendiary