refutar - to refute

regañar - to scold, to tell off

regenerar - to regenerate

reglamentar - to regulate

regocijar - to delight, to fill with joy

rehacer - to remake

reiterar - to reiterate, to repeat

relanzar - to throw back, to repel

relatar - to relate, to recount

rellenar - to refill, to fill with, to fill in