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