Re-viv-al, adfywiad, dadebriad
Re-volv-ing, amdroad; myfyriad
Re-ward-ed, gwobrwyedig
Rhet-o-ric, ffraetheb, areithyddeg
Rheu-ma-tism, cryd cymalau, cymalwsg
Rid-i-cule, gwawd: gwawdio
Right-eous-ness, cyfiawnder, uniondeb
Rig-or-ous, garw, gerwin, llymdost
Ring-lead-er, blaenor, penaeth
Ri-ot-ous, terfysgus