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