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