Here's what rhymes with proportionner.
                        
                        
                    
                                extortioner  Words that almost rhyme with proportionner
darkener  foreigner  forerunner  gardener  coroner  hardener  sharpener  popular  carpenter  corridor  basilar  commoner  portraiture  jocular  marketer  softener  sparkler  bolivar  mortgager  rottener  tobogganer  monitor  biographer  photographer  unpopular  forfeiture  modular  columnar  geographer  nodular  forester  godmother  hardcover  lobular  conifer  colander  modeler  odometer  gobbler  gossiper  jobholder  hosteller  twaddler  quarreler  snorkeller  uncommoner  philosopher  thermometer  consular  globular  binocular  kilometer  astrologer  kilometre  quadrature  saltpetre  blockbuster  harvester  demographer  radiographer  pedometer  monocular  anemometer  hydrometer  speedometer  autobiographer  oceanographer  proconsular  pornographer  hectometer  kindergartener  hectometre  milometer  micrometer  spectrometer  interlocutor  choreographer  magnetometer  bibliographer  hygrometer  hagiographer  cyclometer  mileometer  seismographer  interferometer  lexicographer  cinematographer  historiographer