Fer-vent, gwresog; taer; eiddgar
Fer-vid, gwresog, poeth; brwdfrydig
Fer-vour, gwres
Fes-ter, crawni, madru, braenu
Fes-tive, gwleddol
Fet-ter, llyffethar: llyffetheirio
Feu-dal, gwriogaethol; cydweiniol
Fe-ver, twymyn, llucheden: twymyno
Few-el, tanwydd: tanboethi, porthi tân
Fi-at, gorchymmyn, arch