Here's what rhymes with gradk.
                        
                        
                    
                                gay  k  bk  kc  cay  they  may  day  way  say  pay  play  re  lay  j  array  bay  clay  decay  gray  grey  pray  ray  che  hay  nay  okay  prey  weigh  tray  fay  fe  yea  bouquet  dey  hey  ley  ok  rei  sei  whey  bj  drei  jay  lei  payee  rea  rj  tae  tj  tre  wei  bey  bray  dray  neigh  brae  fey  roue  shay  trey  away  stay  today  delay  essay  obey  spray  ballet  cafe  stray  sway  fray  oj  slay  allay  attache  ij  passe  sleigh  cabaret  fj  naturae  replay  zwei  croquet  flay  parquet  risque  belay  splay  moray  purvey  toupee  aurae  briquet  spay  umbrae  aweigh  copay  survey  convey  betray  dismay  halfway  repay  astray  runaway  underway  valet  cliche  defray  disarray  fillet  dossier  gangway  matinee  puree  saute  toothache  underlay  alleyway  crochet  lingerie  wordplay  carriageway  filet  inveigh  airplay  byplay  nisei  prepay  sachet  soubriquet  hooray  noway  sickbay  urethrae  hurray  layaway  outplay  outstay  reweigh  underpay  bobsleigh  respray  display  anyway  yesterday  holiday  portray  vertebrae  disobey  faraway  lamellae  overlay  papillae  passageway  protege  waterway  emigre  francais  breakaway  getaway  sobriquet  soiree  souffle  workaday  caraway  castaway  giveaway  hideaway  ricochet  throwaway  patellae  pleurae  resurvey  sorbet  stingray  stowaway  takeaway  flyaway  overpay  overplay  roundelay  caesurae  medullae  copulae  misplay  tearaway  everyday  interplay  communique  sequelae  microarray  nebulae  fistulae  maxillae  scapulae  straightaway  cabriolet  fibulae  underplay  macrame  overstay  uvulae  cybercafe  foldaway  penumbrae  walkaway  tarantulae  formulae  naivete  societe  trabeculae  caravanserais  salmonellae  companionway