Ffrwd, n. a stream, a torrent
Ffrwg, n. violence, outrage
Ffrwgwd, n. squabble, brawl
Ffrwm, a. luxuriant, rank
Ffrws, n. sudden motion
Ffrwst, n. hurry, bustle
Ffrwt, n. jet, a toss; a frisk
Ffrwyd, n. pulsion, impulse
Ffrwydro, v. to explore
Ffrwydrol, a. exploding