Here's what rhymes with semiimmune.
                        
                        
                    
                                immune  loon  rune  soon  moon  noon  tune  boon  hewn  shewn  doin  dune  foon  coon  maroon  prune  impugn  croon  goon  shoon  balloon  spoon  lagoon  saloon  strewn  toluene  aucune  raccoon  swoon  attune  racoon  cartoon  monsoon  platoon  cocoon  baboon  buffoon  harpoon  pontoon  typhoon  bassoon  dragoon  tycoon  jejune  lampoon  doubloon  patroon  picayune  bestrewn  macaroon  honeymoon  forenoon  opportune  inopportune  festoon  importune  spittoon  poltroon  afternoon  protozoon  tablespoon  spermatozoon  dessertspoon  trinitrotoluene  Words that almost rhyme with semiimmune
room  loom  rheum  whom  boom  tomb  bloom  doom  gloom  womb  broom  groom  plume  zoom  fume  suum  flume  assume  resume  abloom  entomb  consume  perfume  presume  elbowroom  legroom  foredoom  costume  residuum  subsume  exhume  boxroom  strongroom