Here's what rhymes with internal.
                        
                        
                    
                                journal  eternal  colonel  maternal  kernel  diurnal  infernal  sternal  vernal  external  paternal  nocturnal  fraternal  Words that almost rhyme with internal
dermal  thermal  epidermal  geothermal  isothermal  hydrothermal  purple  turtle  chervil  burble  burgle  circle  verbal  fertile  girdle  servile  hurdle  inertial  infertile  encircle  myrtle  gurgle  curdle  hurtle  dispersal  tubercle  hurtful  deferral  illiberal  mirthful  demurral  disbursal  commercial  reversal  referral  rehearsal  nonverbal  squirrel  epidural  puerperal  scleral  subdural  clitoral  conferral  forkful  infomercial  universal  semicircle  bicameral  controversial  transversal  noncommercial  transferal  noncontroversial