Ret-ro-grade, gwrthgrwydrol
Ret-ro-spect, gwrthedrych, adolwg
Re-venge-ful, dialgar, ymddialgar
Rev-e-nue, ardreth, cyllid
Rev-er-ence, parch, anrhydedd: perchi, parchu
Rev-er-end, parchedig, hybarch
Rev-er-ent, parchus; gostynedig
Re-vers-al, dymchweliad, diddymiad
Re-ver-sion, gwrthdroad; olyniad
Re-vi-sion, adchwyliad, ailolygiad