Diaphonia rhymes with:
sinfonia, adonia, amazonia, ansonia, antonia, caledonia, colonia, cydonia, donia, estonia, gastonia, gonia, harmonia, idonia, latonia, macedonia, madonia, new-caledonia, omonia, patagonia, petronia, philharmonia, rondonia, sidonia, sinfonia, slavonia, slovonia, sophronia, tonia, vernonia, vidonia
Diaphonia sounds like:
dabney, daffin, dafna, daphne, dauphin, dauphinee, davin, davina, davino, deadpan, deafen, debaun, debnam, debona, debono, deepen, defame, defina, define, defino, dehaven, depina, deppen, devan, devane, devaney, devany, deveney, devenney, devenny, deveny, devin, devine, deviney, devinney, devino, devon, devona, devonian, dibona, dibuono, diffin, difm, divan, diven, divine, diviney, dobbin, dopamine, dubin, dubinin, duffin, dupin