Here's what rhymes with buttercask.
                        
                        
                    
                                cask  task  mask  masque  bask  basque  flask  unmask  Words that almost rhyme with buttercask
back  attack  bank  lack  rank  tank  thank  crack  pack  sank  nach  rack  sac  sack  crank  hack  jack  tack  aback  fac  knack  lac  shack  shank  dank  hanc  lank  mac  mak  quack  tak  talc  whack  clack  clank  hank  wrack  yak  yank  claque  mack  wack  yack  black  track  blank  drank  flank  stack  frank  plaque  slack  paperback  plank  shrank  franc  smack  snack  flak  prank  unpack  spank  stank  ipecac  swank  databank  flack  anorak  shellac  antitank  lumberjack  piggyback  outrank  repack  applejack  charabanc  embank  rickrack  pickaback  highjack  mudpack  skyjack  cardiac  almanac  elegiac  maniac  riverbank  zodiac  hardtack  pointblank  crackerjack  gunnysack  razorback  thumbtack  counterattack  quarterback  demoniac  haversack  stickleback  amnesiac  steeplejack  insomniac  nymphomaniac  megalomaniac