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