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