Here's what rhymes with decadic.
nomadic sporadic Words that almost rhyme with decadic
magic static tragic dogmatic emphatic ecstatic erratic pelagic stigmatic priapic democratic dramatic automatic hepatic aromatic climatic pragmatic schematic somatic thematic traumatic autocratic enigmatic pneumatic rheumatic asthmatic chromatic fanatic operatic magmatic phlegmatic spermatic syllabic astigmatic disyllabic apparatchik aerobatic diplomatic pancreatic enzymatic lymphatic prostatic aliphatic cinematic kinematic prismatic achromatic idiomatic technocratic theocratic zygomatic acrobatic schismatic systematic aristocratic bureaucratic charismatic metastatic axiomatic emblematic paradigmatic programmatic diagrammatic intrahepatic muriatic undemocratic epigrammatic panchromatic plutocratic undramatic photostatic unemphatic problematic symptomatic hydrostatic psychosomatic diaphragmatic orthostatic antidemocratic meritocratic nondemocratic numismatic polysyllabic thermostatic nondramatic undiplomatic asymptomatic electrostatic idiosyncratic melodramatic monochromatic homeostatic monosyllabic posttraumatic unsystematic semiautomatic unidiomatic unproblematic homoeostatic classic graphic panic catholic manic phallic tannic dynamic organic traffic fabric gastric gigantic ceramic lactic mechanic tactic cephalic clastic heraldic italic titanic mastic botanic tyrannic malefic baldric elastic plastic demographic geographic metallic drastic frantic thoracic volcanic barbaric didactic dynastic hemorrhagic oceanic stochastic galactic galvanic geriatric glutamic messianic panoramic pedantic spastic telegraphic thalamic tympanic haemorrhagic satanic bimetallic ataxic biographic romantic psychiatric semantic inorganic monastic photographic scholastic ethnographic inelastic pediatric sarcastic synaptic climactic ophthalmic topographic aplastic gymnastic lithographic psychopathic tomographic bombastic isobaric paediatric slapstick stenographic typographic neoclassic periphrastic sycophantic matchstick xerographic fantastic radiographic aerodynamic bibliographic nostalgic pornographic angiographic cartographic holographic orthographic splanchnic viscoelastic nonmetallic orgiastic calligraphic osteopathic phonographic cytoplasmic hypothalamic neoplastic prophylactic thermodynamic ecclesiastic endoplasmic hemodynamic presynaptic psychodynamic stratigraphic hyperplastic hypoplastic iconographic chiropractic oceanographic unromantic autobiographic choreographic intergalactic nonelastic seismographic enthusiastic chromatographic hydrodynamic postsynaptic anaphylactic iconoclastic intrathoracic protoplasmic thermoplastic anticlimactic interscholastic lexicographic transoceanic transatlantic crystallographic cinematographic unenthusiastic overenthusiastic electrocardiographic electroencephalographic