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