Here's what rhymes with planetary.
                        
                        
                    
                                bury  dairy  cherry  berry  tarry  parry  tare  barre  dromedary  terry  very  vary  marry  monetary  fairy  merry  ferry  prairie  wary  hairy  sherry  harry  nary  apiary  lapidary  faerie  wherry  nondairy  military  commentary  dietary  monastery  solitary  urinary  cemetery  sanitary  unitary  ancillary  honorary  commissary  emissary  scary  ternary  canary  dignitary  luminary  unwary  pessary  necessary  literary  arbitrary  missionary  pulmonary  capillary  sanctuary  adversary  fragmentary  legendary  momentary  pituitary  tributary  budgetary  estuary  mercenary  salutary  seminary  mortuary  papillary  savagery  remarry  unsanitary  aviary  insanitary  legionary  actuary  cassowary  equerry  huckleberry  bilberry  elderberry  topiary  plagiary  sectary  ordinary  secondary  secretary  temporary  customary  preliminary  coronary  dictionary  hereditary  imaginary  maxillary  proprietary  reactionary  visionary  corollary  dysentery  sedentary  apothecary  fiduciary  functionary  funerary  itinerary  obituary  statuary  cautionary  centenary  interplanetary  paramilitary  tutelary  bacillary  beriberi  breviary  buffoonery  diversionary  humeri  nonliterary  chokecherry  unnecessary  stationary  subsidiary  involuntary  judiciary  pecuniary  veterinary  culinary  sanguinary  stationery  deflationary  epistolary  probationary  nonmilitary  recessionary  voluptuary  tercentenary  uncustomary  contemporary  evolutionary  vocabulary  beneficiary  disciplinary  discretionary  inflationary  expansionary  undersecretary  concessionary  eleemosynary  bicentenary  nonhereditary  extraordinary  revolutionary  exclusionary  confectionery  genitourinary  supernumerary  geostationary  elocutionary  expeditionary  constabulary  noninflationary  interdisciplinary  cardiopulmonary  multidisciplinary  counterrevolutionary  Words that almost rhyme with planetary
belly  jelly  deli  telly  allele  underbelly  smelly  vermicelli  barely  petty  penny  jetty  teddy  bevy  jenny  many  heavy  ready  fairly  rarely  steady  semi  deadly  gentry  levy  antennae  heady  levee  messy  belfry  deathly  machete  pebbly  tempi  testy  breathy  dressy  faery  pesky  kepi  leggy  recce  sedgy  veggie  especially  twenty  healthy  gently  plenty  wealthy  lengthy  densely  fleshy  carefree  deftly  medley  sentry  sexy  sketchy  sweaty  unfairly  unsteady  vestry  gayety  hefty  stealthy  fidgety  tensely  trendy  aplenty  libretti  maidenly  marquetry  thready  adeptly  lefty  wetly  already  directly  assembly  scarcely  freshly  unhealthy  frenzy  squarely  apoplexy  spaghetti  coquetry  fleshly  halfpenny  sullenly  confetti  hostelry  effendi  preciously  woodenly  friendly  correctly  elementary  intensely  epilepsy  immensely  intently  deviancy  ineptly  indirectly  complementary  expressly  incorrectly  unfriendly  excellency  grotesquely  complexly  narcolepsy  sacredly  baronetcy  catalepsy  cognoscenti  reassembly  penitently  ambivalently  circumspectly  confusedly  equivalently