Here's what rhymes with metaplutonic.
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atomic comic genomic diatomic anatomic autonomic subatomic astronomic tragicomic economic taxonomic agronomic ergonomic gastronomic uneconomic macroeconomic microeconomic socioeconomic topic boric logic toxic folic gothic tropic atopic biotic euphoric robotic bardic bucolic hayrick rollick cosmic aortic chaotic erotic garlic caustic despotic idiotic parabolic pyloric formic frolic gnostic iambic karmic meiotic myopic prosodic cirrhotic diabolic rhapsodic seraphic strophic subtopic chopstick carsick placekick historic symbolic patriotic periodic apostolic aquatic exotic hydraulic neurotic biologic caloric diastolic episodic geologic hypnotic melodic psychotic systolic carbolic isotopic phenolic anabolic anarchic anoxic basaltic catabolic cathodic dialogic lethargic meteoric orthodontic thrombotic heartsick subarctic allegoric shambolic astronautic alcoholic metabolic antibiotic philosophic prehistoric catastrophic isotropic narcotic neurologic pathologic prognostic ascorbic etiologic hyperbolic metaphoric necrotic semiotic spasmodic symbiotic synoptic yardstick agnostic cathartic nontoxic oligarchic pedagogic peristaltic polymorphic sclerotic telescopic antarctic demagogic folkloric hierarchic vitriolic acrostic ecologic gyroscopic macrobiotic posthypnotic theosophic subtropic chocoholic shopaholic chocaholic horologic diagnostic hydrochloric cytotoxic histologic macroscopic anisotropic endoscopic immunologic metamorphic morphologic psychologic melancholic psychotropic quixotic arthroscopic bacteriologic homoerotic unpatriotic xenophobic stroboscopic workaholic sophomoric meteorologic nonnarcotic aetiologic microscopic physiologic philanthropic anthropomorphic epidemiologic spectroscopic hematologic stereoscopic fluoroscopic kaleidoscopic microcosmic antispasmodic misanthropic nonalcoholic haematologic noncaloric gynaecologic seismologic atherosclerotic pharmacologic gynecologic electroscopic submicroscopic