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