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