Here's what rhymes with sipeu.
                        
                        
                    
                                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  vnto  vou  wou  wu  goo  moo  shoo  gnu  roux  zebu  thew  whew  into  through  few  view  grew  que  crew  pursue  threw  flew  q  screw  anew  clue  cue  glue  hue  queue  undue  cu  flue  slew  subdue  taboo  undo  flu  overdue  piu  skew  tattoo  thru  beaucoup  eschew  fue  hew  mieux  outdo  shampoo  shrew  sprue  vue  clew  mew  overdo  redo  strew  halloo  spew  valuer  slue  phew  booboo  achoo  hitherto  residue  avenue  bamboo  canoe  renew  accrue  debut  ensue  untrue  jusqu  sinew  askew  imbue  outgrew  honeydew  endue  fondue  foreknew  indue  kazoo  overshoe  overdrew  wazoo  atishoo  review  revenue  overview  withdrew  retinue  caribou  overthrew  revue  ballyhoo  cockatoo  bugaboo  marabou  peekaboo  bestrew  buckaroo  muumuu  overflew  prevue  superglue  overgrew  regrew  interview  rendezvous  construe  kangaroo  hullabaloo  barbecue  barbeque  misconstrue