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