Malignancies rhymes with:
pregnancies, pregnancies, agencies, agencies', agency's, conservancy's, constituencies, contingencies, counterinsurgencies, currencies, currency's, deficiencies, delinquencies, dependencies, discrepancies, efficiencies, emergencies, exigencies, expectancies, frequencies, inefficiencies, insolvencies, insurgencies, pregnancies, presidencies, presidency's, redundancies, regency's, tendencies, transparencies, vacancies
Malignancies sounds like:
malacanang, malaysians, malignancy, malloseismic, melching, milken's, milkens, milkens', milking, millicom's, mulching, mulkins, mulligans