Agencies' rhymes with:
agencies, agency's, agencies, agency's, contingencies, counterinsurgencies, emergencies, exigencies, insurgencies, regency's
Agencies' sounds like:
accessing, accusing, acheson's, achesons, aching, acme's, acquiescence, acquiescing, agamemnon's, agans, agence, agencies, agency, agency's, aging, agins, agnes, agnico, agnos, agnosio, agonies, agonize, agonizes, aguanga, aguinaga, aikens, aikins, akens, akins, aquinas, aquino's, ascencio, asencio, ashkenazi, ashkenazis, asians, askance, askin's, asking, askins, asmus, assassin's, assassins, assessing, assigning, assigns, assumes, assuming, ausmus, awakening, awakens, axioms, axons, azcuenaga