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