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