Here's what rhymes with osperity.
                        
                        
                    
                                parity  rarity  verity  clarity  disparity  polarity  posterity  temerity  celerity  hilarity  prosperity  sincerity  solidarity  dexterity  similarity  bipolarity  capillarity  popularity  familiarity  insincerity  subsidiarity  peculiarity  regularity  singularity  angularity  irregularity  granularity  unfamiliarity  Words that almost rhyme with osperity
parody  therapy  fidelity  melody  psychotherapy  hydrotherapy  hypnotherapy  chemotherapy  radiotherapy  physiotherapy  density  penalty  specially  steadily  deputy  heredity  heresy  specialty  terribly  brevity  serenity  merrily  warily  wearily  apparently  carefully  identity  heavily  readily  destiny  integrity  seventy  jealousy  legacy  hegemony  peasantry  leprosy  longevity  pedigree  severally  tenancy  verily  sesame  amenity  pedantry  velvety  tenantry  testily  acerbity  devilry  prayerfully  retinae  temperately  necessity  intensity  primarily  tendency  chemistry  presently  extremity  heavenly  mentally  supremacy  centrally  chemically  pleasantly  carelessly  felony  indemnity  solemnity  dentistry  dreadfully  immensity  jealously  medically  weaponry  heraldry  inequity  pleasantry  revelry  telemetry  telepathy  unbearably  legibly  unsteadily  blessedly  fretfully  necessarily  essentially  potentially  pregnancy  ordinarily  secondly  temporarily  voluntarily  allegedly  momentarily  ostensibly  customarily  perplexity  sensibly  clemency  militarily  recklessly  secondarily  splendidly  breathlessly  flexibly  mastectomy  credibly  helpfully  impeccably  nonentity  vasectomy  successfully  complexity  dependency  accidentally  arbitrarily  expectancy  incidentally  respectfully  transparency  ascendancy  helplessly  incessantly  ascendency  biochemistry  convexity  hysterectomy  restlessly  sequentially  expectantly  indelibly  professedly  transparently  unpleasantly  biochemically  geochemistry  impetuously  respectably  tangentially  fundamentally  discrepancy  incredibly  tremendously  unnecessarily  contentedly  exponentially  insensibly  preferentially  acceptably  coincidentally  confessedly  confidentially  lamentably  providentially  regretfully  existentially  inclemency  regrettably  resentfully  sentimentally  independently  conscientiously  unsuccessfully  developmentally  marvellously  relentlessly  clandestinely  inexpressibly  indispensably  instrumentally  tonsillectomy  experimentally  extraordinarily  contemptuously  incrementally  incontestably  quintessentially  superintendency  temperamentally  unacceptably  environmentally