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