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