Modalities rhymes with:
abnormalities, brutalities, commonalities, fatalities, formalities, generalities, realities, technicalities, tonalities, abilities, abnormalities, brutalities, capabilities, commonalities, disabilities, facilities, fatalities, fidelities, fidelity's, formalities, generalities, hostilities, liabilities, possibilities, probabilities, qualities, realities, responsibilities, technicalities, tonalities, utilities, utilities', utility's