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