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