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