Here's what rhymes with decouple.
                        
                        
                    
                                couple  suppl  supple  tuple  rappel  uncouple  thermocouple  Words that almost rhyme with decouple
cuddle  cudgel  double  subtle  bubble  rubble  shuttle  muddle  puddle  huddle  publ  scuttle  fuddle  beatable  trouble  stubble  dirigible  redouble  playable  vocable  befuddle  acquirable  tamable  addable  rebuttal  damnable  friable  attachable  flyable  vincible  ignitable  unlikable  unplayable  dividable  oversubtle  conformable  uncharitable  unbridgeable  nonviable  filtrable  unnameable  containable  unloveable  imperishable  imperturbable  exploitable  unarguable  compoundable  indissoluble  translatable  transmutable  untranslatable  indemonstrable  caecal  guzzle  gunnel  muscle  tunnel  puzzle  bustle  funnel  muzzle  shovel  buckle  chuckle  nuptial  rustle  shuffle  tional  hovel  hustle  knuckle  muffle  mussel  ruffle  scuffle  juggle  suckle  tussle  crumple  runnel  nuzzle  pummel  rumple  tamale  tousle  gumball  cupsful  humble  bundle  jungle  fungal  tumble  colourful  crumble  crustal  ductile  jumble  rumble  ductal  grumble  smuggle  fumble  mumble  phrasal  pustule  bumble  prenuptial  reshuffle  snaffle  snuggle  truffle  bungle  truckle  duckbill  lungful  snuffle  jugful  tubful  mugful  kerfuffle  pinocle  struggle  frontal  triumphal  autumnal  stumble  bestowal  conformal  lustful  peduncle  subtile  trundle  unbuckle  tumbrel  prefrontal  honeysuckle  carbuncle  trustful  nonvocal  heptagonal  disgruntle  antifungal  suboptimal  duodecimal  granduncle  subcortical  distrustful  mistrustful