Here's what rhymes with oxybarbiturates.
                        
                        
                    
                                barbiturates  Words that almost rhyme with oxybarbiturates
literates  illiterates  alliterates  difference  timorous  vigorous  rigorous  itinerants  spinnerets  cordilleras  bitterness  indifference  deliverance  carnivorous  herbivorous  omnivorous  pestiferous  dipterous  calciferous  wilderness  belligerents  coniferous  vociferous  belligerence  carboniferous  oviparous  riverbanks  viviparous  refrigerants  insectivorous  disfigurements  nonbelligerents