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