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