Vallas rhymes with:
ballas, callas, gallas, hallas, kallas, abiola's, abuellah's, afula's, angela's, angola's, apalachicola's, arenella's, arkla's, attila's, ballas, begala's, bellas, callas, carla's, casillas, cola's, copolla's, coppola's, ella's, formulas, fuklah's, galas, gallas, golas, gondolas, gonzalez, goodfellas, gorillas, guatemala's, guerillas, guerrillas, guerrillas', gulas, halas, hallas, hecla's, hezbollah's, islas, kabila's, kalas, kallas, koalas, kulas, lula's, mancillas, mandela's, manila's, matala's, mazzola's, michela's, miklas, milas, motorola's, mullahs, myla's, najibullah's, nicklas, nickolas, ornelas, ornella's, ornellas, pamela's, pasillas, pergolas, priscilla's, ruelas, scillas, shalala's, sheila's, skoczylas, stella's, tarantulas, tuzla's, umbrellas, valensuela's, vandellas, venezuela's, villa's, villas, violas, wala's, walas
Vallas sounds like:
valasek, valek, vales, valeska, valis, valk, valko, vallejo, vallejos, valles, valley's, valleys, vallez, vallis, valls, valois, valueless, values, values', valukas, veals, veilleux, veils, velasco, velasquez, velazco, velazquez, velez, velika, veliz, vellucci, veloso, veloz, vials, vilas, viles, villa's, village, village's, villages, villas, ville's, villegas, villwock, violas, vlach, vlachos, vlahakis, vlahos, vlasak, vlasic, vlcek, vlok, voelz, voiles, voles, volga, volk, volleys, volokh, volz, vowels, vowles, voyles