Captives rhymes with:
contraceptives, active's, actives, additives, adjectives, alternatives, automotive's, collectives, conservatives, conservatives', contraceptives, cooperatives, derivatives, detective's, detectives, directives, disincentives, electives, executive's, executives, executives', expletives, fixatives, fugitives, imperatives, incentives, initiatives, laxatives, locomotives, motives, narratives, natives, negatives, neoconservatives, nonnatives, objectives, octaves, operatives, palliatives, performatives, perspectives, positives, prerogatives, preservatives, preventatives, relative's, relatives, representative's, representatives, representatives', superlatives