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