Accusative rhymes with:
acquisitive, causative, dispositive, positive, acquisitive, additive, affirmative, alliterative, alternative, argumentative, causative, co-operative, commemorative, communicative, comparative, competitive, consecutive, conservative, consultative, contemplative, cumulative, curative, decorative, degenerative, demonstrative, derivative, diminutive, discriminative, dispositive, duplicative, evocative, executive, expletive, exploitative, federative, figurative, fixative, formative, fugitive, generative, illustrative, imaginative, imperative, indicative, informative, initiative, inoperative, insensitive, interpretive, intuitive, laxative, lucrative, narrative, negative, neoconservative, noncompetitive, noncumulative, nonexecutive, normative, nutritive, operative, oversensitive, palliative, participative, pejorative, performative, positive, prerogative, preservative, preventative, primitive, prohibitive, provocative, punitive, putative, recuperative, relative, remunerative, rep., representative, restorative, secretive, sedative, sensitive, speculative, superlative, talkative, tentative, ultraconservative, uncompetitive, uncooperative, unimaginative, uninformative, unrepresentative, vituperative
Accusative sounds like:
acidify, acquisitive, actava, active