Here's what rhymes with tetrastichous.
                        
                        
                    
                                douse  dowse  house  mouse  spouse  blouse  rouse  louse  grouse  boathouse  powerhouse  firehouse  meetinghouse  slaughterhouse  summerhouse  packinghouse  porterhouse  boardinghouse  coffeehouse  clearinghouse  Words that almost rhyme with tetrastichous
bows  boughs  dhows  chows  pouffe  taus  mouth  south  cows  arouse  vows  brows  browse  espouse  ploughs  plows  drouth  hows  prows  cowers  drowse  louche  mows  thous  wows  loughs  allows  endows  avows  carouse  scows  menopause  hedgerows  disavows  windrows  haymows  snowploughs  cottonmouth  cornrows  prognathous  doubts  bounce  bouts  toutes  pounce  touts  pouts  jounce  pouffes  shouts  denounce  droughts  spouts  jousts  louts  routs  trouts  trounce  drouths  stouts  counts  announce  renounce  mounts  scouts  sprouts  redoubts  founts  snouts  clouts  flounce  flouts  grouts  roustabouts  rousts  accounts  amounts  pronounce  discounts  whereabouts  thereabouts  hereabouts  dismounts  marabouts  roundabouts  downspouts  mahouts  layabouts  runabouts  turnabouts  loudmouths  gadabouts  recounts  surmounts  remounts  waterspouts  beansprouts  mangetouts  mispronounce  cottonmouths  walkabouts