Mercado rhymes with:
avocado, incommunicado, kadow, lucado, mikado, yokado, abbado, aguado, albarado, alvarado, amado, avocado, baldonado, bravado, casado, collado, colorado, coronado, corrado, cruzado, cuadrado, delgado, desperado, dorado, eldorado, furtado, grado, granado, guardado, hurtado, incommunicado, jurado, kadow, lagnado, lucado, machado, maldonado, mikado, morado, morgado, peinado, pitblado, prado, preciado, rado, regalado, rosado, salgado, sepulvado, silverado, tirado, toronado, tostado, varnado, varnadoe, vornado, yokado
Mercado sounds like:
mannerist, marcade, marched, marchetta, marchetti, marchita, marchitto, marcott, marcotte, marget, margette, margiotta, margittai, margot, marked, market, marketed, marketi, marketwide, markwood, marquest, marquette, marquita, marxist, marzette, marzotto, memorized, merced, merest, merged, merkt, miracid, mirsad, monarchist, morgado, morisette, morishita, morissette, morrisett, morrisette, morrissette