Improvisations rhymes with:
capitalizations, characterizations, civilizations, denationalizations, liberalizations, organisations, organization's, rationalizations, reorganizations, accusations, authorizations, capitalizations, characterizations, civilizations, denationalizations, dramatizations, generalizations, hospitalizations, immunizations, liberalizations, mischaracterizations, mobilizations, nationalizations, organisations, organization's, organizations, privatizations, rationalizations, realizations, recapitalizations, reorganizations, sterilizations