Here's what rhymes with certifican.
                        
                        
                    
                                thicken  chicken  stricken  quicken  Words that almost rhyme with certifican
cecum  position  vision  hidden  fiction  fission  silken  villain  apposition  given  women  addition  decision  written  division  opposition  edition  kitchen  listen  mission  permission  physician  provision  friction  petition  supervision  arisen  linen  risen  addiction  affliction  ribbon  ridden  supposition  bitten  derision  diction  pavilion  pigeon  eviction  kitten  smitten  audition  riven  stiffen  sylvan  opinion  million  tradition  commission  conviction  driven  prison  television  transition  admission  ambition  billion  precision  suspicion  abolition  civilian  collision  deposition  dominion  emission  incision  partition  piston  revision  submission  superstition  excision  forgiven  imposition  omission  penicillin  tuition  apparition  attrition  circumcision  depiction  fruition  magician  sedition  unwritten  volition  envision  nonfiction  patrician  pinion  striven  bouillon  children  condition  definition  distinction  religion  composition  jurisdiction  transmission  acquisition  disposition  proposition  repetition  coalition  cognition  exposition  politician  prediction  prohibition  crimson  ignition  musician  remission  subdivision  admonition  benediction  demolition  erudition  kinsmen  preposition  rewritten  technician  christian  dentition  indecision  infliction  intermission  presupposition  superposition  trillion  vermilion  ascription  dereliction  interdiction  logician  overridden  rhetorician  statistician  theoretician  underwritten  description  competition  expedition  ammunition  exhibition  extinction  inhibition  intuition  nutrition  prescription  restriction  clinician  subscription  constriction  juxtaposition  mathematician  requisition  contrition  imprison  inquisition  interposition  rendition  disquisition  midshipman  premonition  superimposition  unchristian  recognition  contradiction  decomposition  inscription  transcription  conscription  crucifixion  encryption  transposition  extradition  indisposition  precondition  redefinition  manumission  obstetrician  pediatrician  proscription  reptilian  predisposition  electrician  malnutrition  contradistinction