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