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