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