Here's what rhymes with disallowing.
                        
                        
                    
                                allowing  ploughing  plowing  mowing  vowing  avowing  disavowing  cowing  wowing  endowing  powwowing  snowplowing  snowploughing  Words that almost rhyme with disallowing
routing  rousing  yowling  lousing  housing  shouting  arousing  crowding  crowning  doubting  drowning  frowning  howling  rounding  browsing  crouching  lounging  sprouting  clouding  fouling  prowling  browning  clowning  flouting  fowling  gouging  grouting  mouthing  pouting  slouching  couching  daubing  downing  dowsing  drowsing  shrouding  touting  cowling  dousing  grousing  vouching  pouching  clouting  gowning  avouching  grouching  blousing  surrounding  accounting  counting  founding  mounting  amounting  announcing  sounding  bounding  grounding  overpowering  pounding  abounding  bouncing  overcrowding  scouting  espousing  scowling  spouting  surmounting  carousing  hounding  jousting  pouncing  debauching  scrounging  enshrouding  flouncing  jouncing  mounding  trouncing  overclouding  astounding  recounting  renouncing  resounding  dismounting  foundling  rebounding  downswing  debouching  remounting  redounding  beclouding  befouling  keelhauling  outshouting  denouncing  compounding  confounding  expounding  pronouncing  propounding  impounding  dumfounding  inbounding  mispronouncing