Here's what rhymes with kottu.
                        
                        
                    
                                to  do  two  too  due  du  dew  tu  chew  deux  bu  ju  jus  peu  pu  boo  chou  chu  doo  tue  pooh  poo  who  you  new  true  knew  blue  drew  u  blew  coup  qu  shoe  zu  lieu  shew  su  sue  vous  fu  lu  rue  stew  zoo  adieu  ado  brew  hu  ku  loo  mu  nu  pew  seu  shu  sou  vu  woo  yew  yu  coo  cou  ewe  feu  gu  ru  shou  thu  tzu  vou  wou  wu  goo  moo  shoo  gnu  roux  thew  whew  into  through  few  view  grew  que  crew  pursue  threw  flew  q  anew  canoe  clue  cue  glue  hue  queue  undue  cu  flue  slew  taboo  undo  flu  piu  tattoo  thru  beaucoup  eschew  fue  hew  mieux  outdo  shrew  sprue  vnto  vue  clew  mew  redo  strew  cockatoo  halloo  spew  valuer  zebu  kazoo  slue  phew  wazoo  booboo  achoo  atishoo  screw  avenue  bamboo  renew  accrue  debut  ensue  subdue  untrue  caribou  jusqu  overdue  skew  kangaroo  shampoo  imbue  outgrew  overdo  honeydew  bugaboo  endue  fondue  foreknew  indue  peekaboo  review  hitherto  residue  withdrew  rendezvous  retinue  construe  revue  sinew  askew  ballyhoo  marabou  bestrew  buckaroo  muumuu  overshoe  prevue  overdrew  regrew  interview  revenue  overview  overthrew  barbecue  hullabaloo  barbeque  overflew  superglue  overgrew  misconstrue