Ffyddio, v. to have faith
Ffyddiol, a. relating to faith
Ffyddlon, a. faithful
Ffyddlondeb, n. faithfulness
Ffydloniad, n. a faithful one
Ffylor, n. dust, powder
Ffyll, a. overgrown; gloomy
Ffyllio, v. to overshade
Ffynadwy, a. fortunate
Ffyned, n. a respiration