Rhwyfol, a. swaying; rowing
Rhwyfolaeth, n. dictatorship
Rhwyfoldeb, n. a state of sway
Rhwyfus, apt to sway; haughty
Rhwyg, n. a rent, a rupture
Rhwygo, v. to rend, to tear
Rhwygol, a. rending tearing
Rhwyll, n. a ring-fence; a paddock: n. an interstice, fret work; a casement
Rhwyllo, v. to form insterstices
Rhwyllog, a. fretted; cross-barred; grated