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