Here's what rhymes with imperfective.
affective effective perspective defective collective objective protective prospective selective connective corrective detective directive elective ineffective infective convective introspective invective projective deflective respective subjective irrespective reflective intersubjective noneffective retrospective nonobjective Words that almost rhyme with imperfective
festive perceptive imperceptive offensive attentive deceptive possessive restive unperceptive defensive incentive digestive preventive receptive inventive obsessive recessive reflexive inoffensive pensive inattentive aggressive excessive impressive successive suggestive oppressive congestive contraceptive preemptive retentive unoffensive extensive expensive intensive progressive depressive inexpensive apprehensive hypertensive redemptive regressive suppressive counteroffensive disincentive digressive overattentive comprehensive expressive compressive repressive coextensive hypotensive proprioceptive transgressive unimpressive inexpressive nonsuccessive retrogressive overaggressive immunosuppressive antihypertensive