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