Here's what rhymes with cartonic.
tonic ionic sardonic sonic conic phonic bionic chronic harmonic ironic chorionic colonic demonic iconic laconic platonic catatonic daemonic acetonic tectonic ultrasonic mnemonic ganglionic isotonic polyphonic diatonic subsonic avionic electronic embryonic supersonic diachronic hypertonic monotonic planktonic symphonic telephonic hydroponic monophonic quadraphonic quadrophonic hegemonic histrionic synchronic architectonic infrasonic philharmonic stereophonic pathognomonic microelectronic Words that almost rhyme with cartonic
atomic comic anatomic genomic autonomic diatomic ergonomic subatomic economic agronomic astronomic tragicomic taxonomic gastronomic uneconomic macroeconomic microeconomic socioeconomic topic carbolic boric logic toxic folic gothic tropic atopic biotic robotic bardic hayrick rollick cosmic aortic chaotic erotic garlic caloric caustic narcotic idiotic pyloric anabolic catabolic cathodic euphoric formic frolic gnostic iambic karmic meiotic myopic orthodontic cirrhotic rhapsodic seraphic strophic allegoric subtopic chopstick carsick shambolic placekick historic symbolic alcoholic periodic aquatic exotic hydraulic neurotic biologic despotic episodic geologic hypnotic melodic psychotic systolic isotopic parabolic phenolic anarchic anoxic basaltic dialogic fibrotic lethargic meteoric nontoxic sclerotic thrombotic bucolic diabolic ecologic heartsick horologic metabolic patriotic antibiotic apostolic philosophic catastrophic diastolic isotropic neurologic pathologic ascorbic etiologic hyperbolic metaphoric morphologic necrotic psychologic semiotic spasmodic symbiotic synoptic yardstick agnostic cathartic oligarchic pedagogic polymorphic quixotic antarctic arthroscopic demagogic folkloric hierarchic vitriolic acrostic subarctic workaholic macrobiotic sophomoric theosophic nonnarcotic subtropic aetiologic noncaloric chocoholic shopaholic astronautic chocaholic diagnostic prehistoric cytotoxic histologic macroscopic prognostic anisotropic endoscopic metamorphic melancholic peristaltic psychotropic telescopic homoerotic kaleidoscopic xenophobic gyroscopic posthypnotic gynaecologic microscopic hydrochloric physiologic philanthropic anthropomorphic atherosclerotic immunologic pharmacologic gynecologic hematologic fluoroscopic microcosmic unpatriotic nonalcoholic stroboscopic meteorologic haematologic seismologic spectroscopic stereoscopic bacteriologic antispasmodic misanthropic electroscopic epidemiologic submicroscopic