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