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