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