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