Re-fine, puro, coethi
Re-fit, adgyweirio, aildaclu
Re-flect, adlewyrchu; adfyfyrio; gwarthruddo
Re-flux, gwrthlif, adlif
Re-form, diwygiad: diwygio
Re-fract, gwrthdori, dadlewyrchu
Re-frain, attal, ffrwyno: ymarbed
Re-fresh, adloni, dadebru
Ref-uge, nawdd, noddfa
Re-fund, ad-dalu, adferu