FromMiddle Welsh andOld Welshri, fromProto-Brythonic*rrix, fromProto-Celtic*rīxs, fromProto-Indo-European*h₃rḗǵs.
rhi m (pluralrhiau)
rhi f (pluralrhiau)
Note: Certain mutated forms of some words can never occur in standard Welsh.All possible mutated forms are displayed for convenience.