Here's what rhymes with preexisting.
                        
                        
                    
                                existing  listing  assisting  insisting  consisting  resisting  twisting  persisting  enlisting  coexisting  subsisting  Words that almost rhyme with preexisting
shifting  sifting  lifting  lisping  drifting  sitting  fitting  hitting  hinting  hissing  silting  thinking  filling  fishing  missing  singing  fixing  shipping  sinking  fearing  kissing  knitting  quitting  shearing  shilling  sibling  thinning  whistling  filming  flitting  pitting  risking  sinning  sipping  spitting  tilting  fiddling  quilting  searing  glinting  hitching  lilting  minting  sieving  slitting  veering  wilting  living  giving  willing  killing  printing  winning  clearing  linking  mixing  picking  spinning  swimming  switching  wishing  bidding  clinging  committing  digging  piercing  rearing  ringing  slipping  splitting  steering  sticking  swinging  billing  cheering  chilling  clicking  clipping  dipping  emitting  grinning  inflicting  kicking  milling  nearing  omitting  pitching  rigging  shrinking  thrilling  whipping  befitting  equipping  flinging  gearing  gripping  kidding  licking  milking  pinning  positing  ripping  skimming  skipping  sniffing  spilling  stinging  stinking  stitching  ticking  tipping  afflicting  chipping  flicking  flipping  ridding  rinsing  scripting  smearing  sneering  squinting  tickling  tiling  tilling  winking  wringing  affixing  chiming  clinking  convicting  dimming  eclipsing  evincing  ginning  grilling  incising  leering  mincing  nipping  pickling  refitting  skidding  skinning  slinging  spearing  splinting  sprinting  sufficing  swishing  whittling  whizzing  wincing  winging  beginning  building  bringing  appearing  drinking  conflicting  convincing  permitting  admitting  depicting  drilling  forbidding  predicting  restricting  springing  adhering  bridging  dismissing  dripping  forgiving  stripping  submitting  blinking  enriching  kindling  lynching  pinching  rethinking  trickling  trimming  tripping  twitching  unthinking  brimming  cringing  fringing  gilding  imprinting  instilling  limping  pricking  remitting  reprinting  stringing  twinning  unwitting  consigning  flinching  refilling  stripling  swindling  unwilling  fulfilling  interfering  transmitting  sprinkling  distilling  bewitching  constricting  counterfeiting  impinging  infringing  misgiving  abridging  agonising  babysitting  reappearing  reliving  reminiscing  disappearing  pioneering  rebuilding  thanksgiving  persevering  unconvincing  unremitting  criticising  electioneering  profiteering  unflinching  unforgiving  fingerprinting  maximising  minimising  nonliving  engineering  contradicting  domineering  underpinning  volunteering