Certo rhymes with:
concerto, ciliberto, concerto, diliberto, huberto, liberto, roberto, ruberto, barto, basurto, ciliberto, concerto, curto, dalporto, diliberto, huberto, liberto, locurto, mirto, porto, quarto, roberto, ruberto, suharto
Certo sounds like:
carat, card, carda, carded, cardia, cardio, cardy, cared, carhart, caridad, caridi, carita, carota, carotid, carretta, carried, carrot, carruth, cart, carta, cartaya, carte, carted, cartee, carty, caruth, caserta, cashiered, cerda, cerrato, cerreta, cerrito, cerruti, certitude, cerutti, chaired, charade, chard, charette, chariot, charita, charity, charred, charrette, chart, charted, checkered, cheered, chert, chord, ciardi, cigarette, cohered, cohort, corath, cord, corda, corday, corded, cordie, cordy, coretta, corette, corradi, corrado, corrode, corroded, cort, corte, corti, cossairt, cosurtuh, court, courtade, courteau, courted, coward, cowart, cowherd, cowsert, cozart, crady, crate, cratia, cratty, create, created, creath, credit, credited, credito, credo, creed, crete, cried, croat, croatia, croteau, crotteau, crotty, crout, crowd, crowded, crowed, crud, cruddy, crude, crute, curate, curd, cured, curried, curt, curti, curto, cuzzort, cyert