Negroni rhymes with:
lagrone, baroni, caltagirone, cotrone, croney, crony, cutrone, droney, lagrone, lecrone, maroni, marrone, morrone, mulroney, patrone, perrone, petrone, petroni, pieroni, pirrone, polifroni, quattrone, rhoney, roney, roni, rowney, rowny, rugeroni
Negroni sounds like:
nagorno, najarian, nanogram, nazarian, negrin, negron, newsroom, nigerian, nygren