Here's what rhymes with underflannels.
                        
                        
                    
                                channels  panels  Words that almost rhyme with underflannels
mammals  camels  enamels  rattles  battles  travels  barrels  candles  canons  castles  granules  handles  rations  rapids  sandals  scandals  vassals  cannons  flanges  gravels  paddles  ranches  saddles  shackles  baffles  cancels  mantles  rambles  rascals  tackles  tassels  classes  branches  happens  masses  passes  samples  chances  gases  passions  dances  fractions  glasses  matches  patches  barons  catches  gallons  grasses  wagons  ballads  bananas  cabins  capsules  fashions  fathoms  mansions  spasms  stanzas  assassins  batches  cantons  canyons  dragons  phantoms  salads  scratches  waggons  brambles  chasms  damsels  plantains  scaffolds  shambles  splashes  talons  tangles  reactions  taxes  advances  attractions  captains  factions  practise  imagines  maxims  molasses  neoplasms  abandons  bastions  chaplains  famines  grandsons  antacids  captions  tantrums  examples  companions  sanctions  battalions  abstractions  distractions  expansions  infractions  interactions  transactions  contractions  examines  satisfactions  alternations  benefactions  enthusiasms  extractions  medallions  circumstances