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