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