Here's what rhymes with certurn.
                        
                        
                    
                                turn  burn  earn  stern  urn  tern  churn  rne  spurn  learn  fern  adjourn  yearn  sauterne  return  discern  overturn  quern  upturn  taciturn  nocturne  concern  subaltern  unconcern  Words that almost rhyme with certurn
term  germ  sperm  terme  berm  perm  firm  worm  therm  affirm  squirm  corm  infirm  isotherm  confirm  reaffirm  endosperm  wheatgerm  angiosperm  gymnosperm  reconfirm