Ro rhymes with:
beaudreau, boudreau, boudreaux, breau, breault, breaux, bro, broe, browe, budreau, cointreau, cro, crow, crowe, escrow, faurot, favreau, fro, froh, gaudreau, gauthreaux, gautreau, gautreaux, gauvreau, gendreau, giraud, goudreau, gro, groh, grow, growe, jandreau, krogh, kroh, krowe, lambreau, monroe, munro, outgrow, perreault, pro, reaux, rheault, rho, roe, roh, rohe, row, rowe, sgro, stroh, strow, tarot, tetreault, throw, tondreau, trow, wroe
Ro sounds like:
r, r., ra, rae, rah, rahe, rahway, rai, raia, rao, rara, rare, rarer, rau, rauer, rauh, raw, rawe, ray, raya, raye, re, rea, rear, reay, ree, reeh, reh, reha, rehear, reher, rehire, rehor, reier, reiher, reo, rew, rewey, rewire, rey, reyer, rha, rhea, rhee, rhew, rho, rhorer, rhue, ria, riera, riha, rio, roa, roar, roe, roehi, roehr, roh, rohe, roher, rohr, rohrer, rohwer, roi, rorer, rorie, rorrer, rory, row, rowe, rower, roy, roye, royer, ru, rua, rue, ruh, ruhe, ruhr, ruwe, rye, ryer, ryohei, ryrie