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