Nwydo, v. to have a whim or bias
Nwydol, Nwydus, a. whimsical
Nwydwyllt, a. hair-brained
Nwydd, n. essence; substance; effects. Nwyddau, goods
Nwyddo, v. to make substantial
Nwyddol, a. substantial, material
Nwyf, n. a pervading element; vivacity, energy, vigour
Nwyfiannu, v. to cheer the spirits
Nwyfiant, n. brightness; vigour
Nwyfio, v. to enliven, to grow lively