Here's what rhymes with antagonistic.
                        
                        
                    
                                mystic  cystic  animistic  artistic  optimistic  journalistic  mechanistic  pessimistic  anachronistic  autistic  ballistic  logistic  sadistic  theistic  monistic  chauvinistic  egotistic  sophistic  realistic  unrealistic  deterministic  holistic  statistic  dualistic  opportunistic  atheistic  communistic  egoistic  hedonistic  juristic  legalistic  novelistic  pantheistic  patristic  polycystic  shamanistic  surrealistic  aphoristic  euphemistic  casuistic  linguistic  stylistic  heuristic  humanistic  idealistic  monopolistic  nationalistic  naturalistic  simplistic  moralistic  paternalistic  pluralistic  rationalistic  socialistic  synergistic  fatalistic  impressionistic  monotheistic  positivistic  syllogistic  eulogistic  polytheistic  voyeuristic  inartistic  jingoistic  pugilistic  belletristic  nepotistic  puristic  characteristic  materialistic  probabilistic  altruistic  capitalistic  narcissistic  ritualistic  futuristic  imperialistic  militaristic  cannibalistic  feudalistic  overoptimistic  relativistic  oligopolistic  expressionistic  individualistic  uncharacteristic  universalistic  spiritualistic  sociolinguistic  Words that almost rhyme with antagonistic
flyspeck  mimic  mythic  granitic  lipstick  lytic  dipstick  diptych  nitpick  critic  analytic  civic  lyric  acidic  apocalyptic  picnic  citric  cryptic  elliptic  physic  cynic  lithic  thymic  gimmick  triptych  sylphic  clinic  rhythmic  terrific  catalytic  parasitic  acrylic  ecliptic  idyllic  limbic  pacific  paralytic  rabbinic  satiric  arthritic  empiric  honorific  antisemitic  patronymic  arrhythmic  nephritic  pantomimic  periwig  pinprick  zoophytic  specific  scientific  intrinsic  hemolytic  logarithmic  monolithic  dendritic  horrific  syphilitic  algorithmic  haemolytic  impolitic  neolithic  organismic  porphyritic  philippic  cenobitic  juridic  polyclinic  coenobitic  bromidic  nonrhythmic  extrinsic  prolific  phenotypic  proteolytic  unscientific  antiarrhythmic  basophilic  hydrolytic  metaphysic  megalithic  saprophytic  unspecific  bulimic  hermaphroditic  encephalitic  psychoanalytic  nonspecific  electrolytic  hemispheric  hydrophilic  carboxylic  cataclysmic  thrombolytic  stratospheric  nonscientific  palaeolithic  paleolithic  transpacific  eosinophilic  fibrinolytic  hieroglyphic