Association's rhymes with:
negotiations, renegotiations, depreciations, negotiations, renegotiations, abbreviations, affiliations, appropriations, associations, aviation's, creations, denunciations, depreciations, deviations, expropriations, humiliations, miscreations, negotiations, pronunciations, radiation's, reconciliations, renegotiations, variations
Association's sounds like:
academic, academics, academies, academy's, acceding, accosting, accusations, acquisition's, acquisitions, acquitting, acting, actinomycosis, action's, actions, acuteness, agitating, ashton's, assistance, assisting, associating, associations, astonish, astuteness, auction's, auctioning, auctions, augustinians, augustyniak, austen's, austin's