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