Rhydyllio, v. to riddle, to sift
Rhidys, n. a drain; a rill
Rhidysio, v. to flow dribbling
Rhidd, n. a centre; an obstacle
Rhiddio, v. to centre; to repel
Rhieddu, v. to act as a chief
Rhieniol, a. feminine
Rhieni, n. ancestry, parents
Rhieniaeth, n. parentage
Rhieniol, a. parental