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