Ffeiad, n. a shaming away
Ffeigiad, n. a driving; to extremity
Ffeigiol, a. ultimate; puzzling
Ffeinid, n. a rising into a point
Ffeinidwydd, n. pine trees
Ffeio, v. to put to shame
Ffeiriad, n. a bartering
Ffeirio, v. to barter, to change
Ffeiriwr, n. a chapman
Ffeithiant, n. effectuation, operation