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