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