Riha rhymes with:
alshelhah, blaha, bruha, cunha, dacunha, farha, folha, hreha, kanawha, mayhugh, mcgaha, muha, piranha, reha, saha, samaha, sardinha, shelhah, simcha, sinha, stavinoha, tamanaha, taneja, troha, warzecha, zaucha, zoucha
Riha 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, rio, ro, 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