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