Here's what rhymes with unpurposing.
                        
                        
                    
                                posing  dozing  purposing  opposing  interposing  deposing  nosing  hosing  apposing  closing  imposing  proposing  supposing  disposing  reposing  superposing  unimposing  composing  exposing  enclosing  decomposing  disclosing  inclosing  juxtaposing  presupposing  superimposing  transposing  predisposing  foreclosing  recomposing  Words that almost rhyme with unpurposing
dosing  joshing  loathing  roving  loafing  clothing  underclothing  grossing  overdosing  unfrozen  unloving  diagnosing  engrossing  bowing  choking  joking  polling  boating  bowling  poking  towing  poaching  tolling  buttoning  doting  toning  toting  boding  doling  poling  toeing  unbuttoning  boning  doming  going  showing  knowing  loading  rolling  voting  blowing  coating  coding  coping  hoping  noting  undergoing  sewing  boasting  coaching  posting  probing  rowing  soaking  sowing  zoning  combing  foaming  moaning  roaming  atoning  bolting  coking  hoeing  homing  jolting  lowing  bloating  bowstring  droning  goading  honing  loaning  phoning  roping  shoeing  stoning  stowing  toasting  trolling  broaching  holing  moping  shoaling  stoking  yoking  offloading  soaping  foaling  paroling  growing  holding  approaching  floating  flowing  smoking  throwing  folding  glowing  quoting  sloping  cloning  denoting  devoting  groping  molding  moulding  slowing  bestowing  coasting  decoding  evoking  groaning  growling  hosting  patrolling  roasting  stroking  strolling  coaxing  croaking  crowing  eroding  snowing  bemoaning  cajoling  gloating  moulting  cloaking  connoting  disowning  gloaming  intoning  molting  scoping  ghosting  chaperoning  demoting  emoting  hoaxing  kowtowing  meowing  controlling  promoting  encoding  invoking  provoking  unloading  upholding  beholding  foreboding  postponing  scolding  ennobling  enrolling  extolling  overloading  reproaching  condoning  reloading  revoking  scrolling  unknowing  unrolling  nonvoting  rezoning  condoling  convoking  disrobing  imploding  ingrowing  proroguing  blazoning  buttonholing  pawnbroking  foregoing  unfolding  overflowing  revolting  consoling  encroaching  exploding  easygoing  overthrowing  telephoning  enfolding  forgoing  logrolling  nonsmoking  infolding  refolding  remolding  remoulding  cuckolding  foreknowing  honeycombing  misquoting  overgrowing  pigeonholing  snowshoeing  withholding  telescoping  oceangoing  wainscoting