Here's what rhymes with monofocal.
                        
                        
                    
                                focal  vocal  local  Words that almost rhyme with monofocal
mogul  synagogal  social  foetal  zonal  sociale  total  noble  mobile  hopeful  modal  nodal  tonal  motile  woeful  asocial  soulful  unsocial  nonsocial  yodel  bowlful  global  coastal  postal  coronal  immobile  calomel  clonal  doleful  prosocial  scrotal  ennoble  ambrosial  atonal  asphodel  disposal  antisocial  mucosal  psychosocial  ignoble  boastful  mongrel  antiphonal  chamomile  proposal  monoclonal  anecdotal  multimodal  sacerdotal  reposeful  polyclonal  reproachful  patrimonial