Here's what rhymes with decompressing.
                        
                        
                    
                                blessing  pressing  dressing  compressing  undressing  addressing  guessing  stressing  impressing  messing  oppressing  assessing  possessing  depressing  professing  suppressing  caressing  confessing  repressing  redressing  expressing  distressing  progressing  coalescing  regressing  acquiescing  prepossessing  transgressing  unprepossessing  Words that almost rhyme with decompressing
threshing  meshing  refreshing  reading  resting  letting  wrestling  yelling  dredging  pledging  treading  dreading  wrecking  blaring  retching  trekking  wresting  getting  setting  bearing  telling  testing  comparing  dwelling  selling  sharing  spreading  wearing  wedding  caring  checking  compelling  daring  heading  lending  stretching  begging  blending  sensing  tearing  alleging  arresting  bedding  condemning  fencing  glaring  herring  nesting  pairing  shedding  wetting  betting  condensing  contesting  felling  flaring  hedging  netting  rending  renting  shelling  threading  vesting  drenching  fetching  flexing  fretting  jesting  paring  pecking  petting  trending  vexing  welling  wrenching  baring  decking  molesting  necking  pegging  penning  shredding  trenching  webbing  wedging  yelping  helping  preparing  sending  bending  declaring  directing  melting  spelling  staring  swelling  tending  cleansing  commencing  contending  pending  repairing  stepping  sweating  welding  electing  erecting  perplexing  protesting  smelling  sparing  stemming  swearing  upsetting  embedding  fledgling  impairing  indwelling  labelling  mending  repelling  sketching  unerring  abetting  annexing  attesting  begetting  besetting  clenching  delving  digesting  impelling  nestling  propelling  rebelling  retelling  scaring  shelving  unbending  unsparing  vending  venting  beheading  belching  belting  channelling  contenting  divesting  entrenching  fending  gelding  ingesting  marvelling  panelling  pelting  quelling  questing  resetting  scenting  tunnelling  uncaring  wending  depending  affecting  attending  collecting  presenting  spending  suggesting  ascending  connecting  defending  descending  interpreting  preventing  protecting  selecting  correcting  detecting  forgetting  impending  intending  investing  neglecting  offending  pretending  projecting  rejecting  requesting  tempting  amending  despairing  dispensing  dissenting  effecting  smelting  avenging  consenting  dissecting  injecting  lamenting  objecting  orienting  perfecting  quarrelling  quenching  unending  unrelenting  commending  deflecting  offsetting  paralleling  privileging  regretting  resenting  squaring  appending  assenting  bisecting  dispelling  ejecting  excelling  forbearing  accepting  attempting  respecting  implementing  reflecting  excepting  comprehending  inspecting  intersecting  inventing  manifesting  subjecting  apprehending  condescending  expelling  infecting  overbearing  prospecting  storytelling  suspecting  suspending  transcending  cementing  complementing  fermenting  intercepting  multiplexing  representing  extending  expecting  overwhelming  recommending  unsuspecting  exempting  expending  recollecting  interconnecting  superintending  experimenting