Here's what rhymes with desynonymizing.
                        
                        
                    
                                rising  arising  sizing  memorizing  memorising  analyzing  devising  minimizing  revising  ionizing  modernizing  energizing  appetizing  economizing  atomizing  mesmerizing  sermonizing  amortizing  anodizing  appetising  mechanizing  prising  prizing  urbanizing  organizing  emphasizing  uprising  advising  analysing  authorizing  maximizing  theorizing  colonizing  merchandising  optimizing  summarizing  authorising  despising  disguising  harmonizing  magnetizing  moralizing  normalizing  synchronizing  homogenizing  immunizing  internalizing  summarising  temporizing  terrorizing  theorising  apprising  feminizing  magnetising  demonizing  empathizing  itemizing  merchandizing  polymerizing  sanitizing  temporising  tyrannizing  womanizing  advertising  surprising  comprising  exercising  recognizing  compromising  enterprising  oxidizing  civilizing  generalizing  mobilizing  symbolizing  synthesizing  baptizing  demoralizing  fertilizing  jeopardizing  paralyzing  polarizing  sensitizing  subsidizing  sympathizing  tantalizing  antagonizing  catalyzing  chastising  customizing  digitizing  dramatizing  evangelizing  fantasizing  formalizing  galvanizing  humanizing  improvising  nationalizing  paralysing  aggrandizing  capsizing  exorcising  finalizing  fraternizing  immobilizing  initializing  naturalizing  penalizing  pulverizing  satirizing  vaporizing  verbalizing  baptising  carbonizing  catalysing  catechizing  dramatising  epitomizing  hypnotizing  idolizing  moisturizing  pasteurizing  polarising  pressurizing  sensitising  solemnizing  televising  traumatizing  unappetizing  unionizing  vulcanizing  utilizing  criticizing  practising  supervising  neutralizing  patronizing  socializing  specializing  apologizing  capitalizing  categorizing  centralizing  equalizing  legitimizing  liberalizing  localizing  philosophizing  rationalizing  reorganizing  scrutinizing  standardizing  sterilizing  visualizing  dehumanizing  democratizing  depolarizing  externalizing  legalizing  metabolizing  monopolizing  publicizing  stigmatizing  systematizing  unsurprising  disorganizing  eulogizing  familiarizing  hypothesizing  marginalizing  personalizing  politicizing  romanticizing  vitalizing  vocalizing  anesthetizing  commercializing  criminalizing  mythologizing  plagiarizing  prioritising  radicalizing  scandalizing  stigmatising  tranquillizing  unenterprising  characterizing  stabilizing  crystallizing  actualizing  decentralizing  globalizing  popularizing  prioritizing  brutalizing  demagnetizing  hybridizing  hydrolyzing  materializing  privatizing  secularizing  tranquilizing  categorising  desensitizing  memorializing  metastasizing  overemphasizing  particularizing  popularising  professionalizing  regularizing  trivializing  destabilizing  industrializing  individualizing  proselytizing  revitalizing  revolutionizing  proselytising  depersonalizing  internationalizing  propagandizing  sentimentalizing  conceptualizing  editorializing  intellectualizing  contextualizing  Words that almost rhyme with desynonymizing
knifing  arriving  diving  writhing  tithing  dicing  driving  deriving  pricing  reviving  thriving  enticing  slicing  conniving  striving  surviving  depriving  splicing  contriving  apprenticing  sacrificing  streptomycin  mining  knighting  writing  dying  fighting  lying  buying  firing  riding  smiling  denying  dining  filing  guiding  hiding  lighting  lining  shining  timing  biting  citing  hiring  inviting  liking  signing  typing  piling  piping  tying  wiping  wiring  dyeing  hiking  inciting  rhyming  siding  sighing  sighting  tiring  whining  igniting  minding  pining  righting  siting  vying  biding  biking  chiding  fining  liming  sniping  uninviting  whiting  indicting  shying  viking  eliding  seining  tiding  whinnying  wining  finding  trying  binding  crying  defining  exciting  flying  climbing  designing  dividing  drying  lightning  sliding  winding  abiding  admiring  assigning  implying  inspiring  residing  retiring  uniting  ageing  frying  gliding  undermining  defying  inclining  plying  priming  prying  resigning  spying  undying  untiring  alighting  aligning  beguiling  bribing  delighting  styling  twining  blighting  griping  hireling  repining  rifling  slighting  spiking  unsmiling  belying  deriding  exiling  debiting  espying  maligning  striking  underlying  applying  acquiring  combining  deciding  declining  grinding  modifying  presiding  refining  relying  reminding  trifling  aspiring  blinding  confining  obliging  reciting  replying  compiling  confiding  edifying  expiring  magnifying  reclining  rewriting  stifling  striding  underwriting  colliding  disliking  divining  fancying  mortifying  underlining  decrying  inscribing  nullifying  reuniting  uninspiring  unwinding  enshrining  nonbinding  ossifying  ramifying  unexciting  providing  describing  occupying  satisfying  supplying  terrifying  overlying  overriding  reconciling  signifying  unifying  ascribing  coinciding  complying  conspiring  horrifying  simplifying  verifying  amplifying  certifying  fortifying  notifying  perspiring  quantifying  ratifying  redefining  subsiding  emulsifying  intertwining  mystifying  pacifying  redesigning  vivifying  indemnifying  overwriting  personifying  recombining  typifying  vilifying  identifying  gratifying  multiplying  specifying  clarifying  classifying  justifying  qualifying  intensifying  testifying  glorifying  prophesying  rectifying  sanctifying  unsatisfying  beautifying  expediting  falsifying  stupefying  subdividing  acidifying  calcifying  codifying  liquefying  oversimplifying  unedifying  prescribing  purifying  stereotyping  subscribing  diversifying  transcribing  circumscribing  disqualifying  solidifying  stultifying  crucifying  fructifying  proscribing  exemplifying  electrifying  objectifying  putrefying