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