Re-cov-er-y, adgaffaeliad, gwelliant
Rec-re-a-tion, adloniad, difyrwch
Rec-ti-fi-er, uniawnydd, cywirydd
Re-en-force-ment, adgyfnerthiad
Re-form-a-tion, diwygiad, adffurfiad
Re-frac-to-ry, anhydyn, cyndyn
Re-ga-li-a, teyrnaddurnau, teyrndrec
Re-gen-er-ate, adgenedlu, aileni
Reg-i-ment-al, catrodawl, byddinol
Reg-i-ment-als, byddinwisg