Here's what rhymes with monophonic.
                        
                        
                    
                                sonic  phonic  ionic  tonic  conic  chronic  ironic  iconic  mnemonic  laconic  subsonic  bionic  avionic  acetonic  harmonic  ultrasonic  chorionic  colonic  demonic  sardonic  supersonic  isotonic  monotonic  platonic  polyphonic  symphonic  catatonic  diatonic  telephonic  daemonic  infrasonic  embryonic  hegemonic  tectonic  ganglionic  hypertonic  synchronic  quadraphonic  quadrophonic  diachronic  histrionic  planktonic  hydroponic  stereophonic  electronic  pathognomonic  architectonic  philharmonic  microelectronic  Words that almost rhyme with monophonic
atomic  comic  anatomic  autonomic  ergonomic  economic  genomic  diatomic  subatomic  taxonomic  uneconomic  agronomic  astronomic  gastronomic  tragicomic  macroeconomic  microeconomic  socioeconomic  folic  hayrick  logic  topic  melodic  gothic  anabolic  atopic  boric  formic  frolic  nephrotic  cirrhotic  seraphic  rollick  alcoholic  cosmic  toxic  aortic  aquatic  chaotic  erotic  exotic  garlic  neurotic  caloric  caustic  episodic  narcotic  psychotic  ascorbic  metaphoric  necrotic  phenolic  tropic  anarchic  basaltic  biotic  cathartic  cathodic  euphoric  gnostic  iambic  karmic  lethargic  meiotic  myopic  bardic  xenophobic  heartsick  rhapsodic  strophic  workaholic  allegoric  subtopic  nonnarcotic  carsick  noncaloric  chocoholic  chocaholic  historic  symbolic  metabolic  apostolic  hydraulic  philosophic  biologic  despotic  diastolic  geologic  hypnotic  macroscopic  neurologic  pathologic  systolic  idiotic  isotopic  morphologic  pyloric  semiotic  spasmodic  synoptic  agnostic  anoxic  catabolic  dialogic  fibrotic  meteoric  nontoxic  orthodontic  robotic  sclerotic  demagogic  diabolic  folkloric  hierarchic  acrostic  ecologic  nonalcoholic  theosophic  chopstick  shambolic  shopaholic  placekick  horologic  microscopic  periodic  antibiotic  catastrophic  isotropic  anisotropic  carbolic  endoscopic  hyperbolic  immunologic  metamorphic  parabolic  psychologic  symbiotic  yardstick  melancholic  pedagogic  quixotic  telescopic  thrombotic  antarctic  arthroscopic  bucolic  homoerotic  vitriolic  gyroscopic  misanthropic  subarctic  sophomoric  subtropic  aetiologic  gynaecologic  seismologic  astronautic  diagnostic  patriotic  physiologic  cytotoxic  histologic  philanthropic  prognostic  atherosclerotic  etiologic  pharmacologic  gynecologic  hematologic  oligarchic  polymorphic  psychotropic  microcosmic  antispasmodic  macrobiotic  meteorologic  haematologic  hydrochloric  prehistoric  anthropomorphic  peristaltic  stereoscopic  fluoroscopic  kaleidoscopic  unpatriotic  posthypnotic  epidemiologic  stroboscopic  submicroscopic  spectroscopic  bacteriologic  electroscopic