Here's what rhymes with buttan.
                        
                        
                    
                                newton  gluten  Words that almost rhyme with buttan
luteum  lupin  sputum  cherubim  ruin  proven  lumen  loosen  neuen  rumen  human  union  pollution  fusion  illusion  allusion  delusion  dilution  bitumen  elution  illumine  mucin  ablution  cumin  crewman  soupcon  solution  diffusion  albumin  intrusion  occlusion  perfusion  collusion  effusion  reunion  acumen  contusion  unproven  obtrusion  unloosen  evolution  dissolution  inclusion  infusion  diminution  inhuman  profusion  seclusion  absolution  devolution  disunion  extrusion  protrusion  disillusion  locution  subhuman  suffusion  preclusion  groomsmen  conclusion  confusion  institution  resolution  revolution  exclusion  communion  persecution  attribution  restitution  superhuman  destitution  nonhuman  elocution  involution  nonunion  reperfusion  lilliputian  constitution  execution  prosecution  substitution  prostitution  retribution  transfusion  convolution  irresolution  malocclusion  antipollution  distribution  contribution  reconstitution  electrocution  redistribution  circumlocution  counterrevolution