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