Cretin rhymes with:
beaten, beaton, beeton, cheetan, cleeton, deaton, eaten, eaton, eton, gleaton, heaton, keaton, keeton, keyton, leaton, seaton, seeton, seton, steeton, sweeten, sweeton, teton, tweten, unbeaten, wheaten, wheaton, yeaton
Cretin sounds like:
caradine, caradonna, carden, cardin, cardoen, cardon, cardona, cardone, cardoni, cardoon, carotene, carton, cartoon, ceradyne, ceridian, certain, chardonnay, chretien, cordon, cordone, corradino, corten, cortin, cortina, cortine, courtenay, courtney, craton, crayton, creation, creeden, creedon, cretien, criton, croatian, crowden, cureton, curtain, curtin, cwiertnia