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