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