Here's what rhymes with microporphyritic.
porphyritic arthritic lytic critic zoophytic analytic hemolytic parasitic granitic paralytic syphilitic haemolytic nephritic catalytic dendritic hydrolytic saprophytic cenobitic proteolytic impolitic encephalitic psychoanalytic electrolytic thrombolytic antisemitic hermaphroditic coenobitic fibrinolytic Words that almost rhyme with microporphyritic
acidic philippic phenotypic juridic bromidic civic cystic lyric mystic terrific mimic mythic citric physic sadistic satiric theistic cynic lithic thymic gimmick aphoristic arrhythmic diptych sophistic nitpick specific artistic realistic clinic rhythmic holistic picnic statistic acrylic autistic ballistic cryptic elliptic horrific idyllic limbic lipstick logistic pacific rabbinic atheistic honorific polycystic chauvinistic polytheistic surrealistic triptych dipstick euphemistic periwig flyspeck sylphic scientific optimistic stylistic heuristic logarithmic pessimistic prolific altruistic dualistic ecliptic moralistic narcissistic pluralistic socialistic synergistic algorithmic animistic basophilic egoistic empiric fatalistic futuristic hedonistic juristic legalistic monistic novelistic organismic pantheistic patristic syllogistic egotistic eulogistic shamanistic voyeuristic bulimic pinprick casuistic polyclinic puristic linguistic unrealistic apocalyptic humanistic idealistic journalistic mechanistic monolithic nonspecific simplistic hemispheric hydrophilic opportunistic rationalistic ritualistic antiarrhythmic communistic metaphysic militaristic monotheistic neolithic positivistic patronymic feudalistic inartistic jingoistic palaeolithic paleolithic pantomimic pugilistic belletristic nepotistic nonrhythmic characteristic intrinsic deterministic extrinsic materialistic nationalistic naturalistic probabilistic paternalistic relativistic unscientific carboxylic eosinophilic hieroglyphic imperialistic impressionistic megalithic unspecific nonscientific overoptimistic transpacific antagonistic monopolistic anachronistic capitalistic cataclysmic oligopolistic universalistic cannibalistic stratospheric expressionistic uncharacteristic spiritualistic individualistic sociolinguistic