Buenos-aires rhymes with:
defreese, haris, therese, benes, coyotes, defreese, earpiece, haris, heidi's, justiss, makepeace, marquiss, matisse, neni's, oncogenes, parretti's, tebelskis, therese, todi's, tucci's
Buenos-aires sounds like:
bancshares, bancshares', bangers, banker's, bankers, bankers', bankshares, benchers, bobbinger's, bongers, bonkers, bouncers, bunkers