Inadequacies rhymes with:
accuracies, associes, bureaucracies, bureaucracy's, candidacies, confederacy's, conspiracies, courtesies, delicacies, democracies, democracy's, embassies, embassy's, fallacies, fantasies, hennessey's, intricacies, jealousies, legacies, odyssey's, pharmacies, policies, policy's, privacies, prophecies
Inadequacies sounds like:
imitates, immediacy, immunetech, immunities, immunomedic, immunomedics, inadequacy, index, index's, indexes, india's, indic, indica, indices, indicia, indies, indigo, indosuez, induce, induces, indus, indyk, initiates, inmate's, inmates, innuendoes, innuendos, intake, intex, intis, intuit's