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