Here's what rhymes with majorhistocompatibility.
                        
                        
                    
                                ability  agility  debility  fertility  compatibility  ductility  docility  possibility  probability  hostility  mobility  utility  capability  nobility  viability  civility  fragility  senility  virility  legibility  availability  applicability  feasibility  acceptability  adaptability  futility  irritability  volatility  sociability  versatility  admissibility  amiability  improbability  servility  affordability  malleability  imperturbability  incapability  scurrility  reliability  susceptibility  inviolability  invisibility  practicability  divisibility  communicability  incorruptibility  negotiability  flexibility  tranquillity  reversibility  indivisibility  inscrutability  responsibility  irresponsibility  inaccessibility  impracticability  comprehensibility  incomprehensibility  Words that almost rhyme with majorhistocompatibility
trilogy  turbidity  billowy  activity  dignity  affinity  publicity  rapidity  acidity  bigotry  busily  timidity  nativity  rickety  trinity  villainy  bigamy  timothy  dizzily  willowy  validity  vicinity  antiquity  conductivity  divinity  officially  symmetry  toxicity  tyranny  captivity  cheerfully  rigidity  antipathy  minutely  salinity  simile  solidity  distally  epitome  fixity  litany  polygamy  prettily  sublimity  timidly  wilfully  cheerily  epiphany  judicially  willfully  dismally  guiltily  polyphony  tearfully  wittily  abysmally  finicky  privily  sympathy  differently  initially  ministry  productivity  elasticity  proximity  infinity  morbidity  visibly  visually  vividly  asymmetry  brilliancy  brilliantly  chivalry  complicity  felicity  plasticity  relativity  skillfully  symphony  fearfully  fearlessly  fluidity  indignity  negativity  soliloquy  blissfully  declivity  distantly  festivity  fitfully  ritually  signally  superconductivity  unofficially  viciously  frigidity  placidity  efficiency  sufficiently  deficiency  simplicity  creativity  efficiently  implicitly  specificity  artificially  humidity  proficiency  sufficiency  facsimile  femininity  liquidity  persistently  unanimity  alkalinity  assiduously  domesticity  periodicity  suspiciously  wistfully  beneficially  calligraphy  deliciously  listlessly  proclivity  catholicity  flippancy  prolixity  quizzically  electricity  explicitly  conspiracy  contingency  masculinity  eccentricity  indifferently  indignantly  intermittently  malignancy  radioactivity  religiously  selectivity  superficially  insensitivity  magnanimity  predictably  surreptitiously  exigency  expeditiously  hospitably  invalidity  invisibly  resiliency  stringency  contingently  stringently  consistently  consistency  delinquency  inherently  insufficiency  inefficiency  insufficiently  insistently  coherency  inefficiently  minstrelsy  pusillanimity  unpredictably  irresistibly  exclusivity  inconsistency  inexplicably  incoherently  inconsistently  immunodeficiency