Here's what rhymes with effectivities.
activities festivities acclivities nativities captivities collectivities declivities proclivities Words that almost rhyme with effectivities
abilities dignities tyrannies bigotries trinities hostilities utilities affinities divinities similes litanies stupidities villainies inabilities debilities facilities capabilities disabilities liabilities sympathies antiquities exigencies aborigines iniquities symphonies antipathies asymmetries civilities indignities facsimiles epiphanies infinities possibilities conspiracies antitheses incivilities asininities readabilities deficiencies probabilities contingencies efficiencies impossibilities malignancies delinquencies improbabilities implausibilities responsibilities inefficiencies incompatibilities