Here's what rhymes with heureux.
                        
                        
                    
                                no  so  know  go  though  low  show  ago  co  flow  slow  snow  throw  row  tho  fo  foe  ho  lo  bo  doe  dough  fro  mo  po  ro  toe  wo  woe  chateau  hello  thro  tow  yo  beau  ceux  faut  goe  hoe  jo  ko  sew  soe  uno  vo  beaux  cho  dau  floe  mow  noe  roe  sho  yeux  zo  chateaux  rho  stow  throe  sloe  whoa  doh  schmo  schmoe  blow  grow  pro  glow  quo  crow  bio  aglow  tuo  bro  dunno  trow  chapeau  kapok  tarot  turbot  kayo  chapeaux  although  below  ratio  overthrow  plateau  audio  bestow  buffalo  overflow  folio  forego  forgo  nouveau  propos  tableau  vertigo  aliquot  dicho  escrow  siglo  tableaux  topos  plateaux  oleo  deathblow  foreknow  overgrow  gateau  fatso  gateaux  pekoe  borzoi  resew  radio  studio  undergo  indigo  patio  stereo  calico  dynamo  polio  apropos  cameo  domino  mistletoe  outgrow  rodeo  spatio  afterglow  trousseau  adagio  piccolo  undertow  regrow  bandeau  matzoh  trousseaux  romeo  embryo  portico  bungalow  medico  oregano  pompano  tallyho  politico  presidio  pistachio  mustachio  microdot  moustachio  portfolio  pianissimo  archipelago  impresario  braggadocio  generalissimo