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