Ffesu, v. to penetrate, to ken
Ffetan, n. budget, a saucy girl
Ffetanu, v. to budget, to bag
Ffetanwr, n. a bagman
Ffetur, n. wild oats
Ffetus, a. subtle, sly, wily
Ffi, n. a loath: inter. fie
Ffiaidd, a. loathsome, detestable
Ffieidd-dra, n. abomination, disgust
Ffieiddiad, n. abhorrence