Here's what rhymes with unpretentious.
                        
                        
                    
                                pretentious  tendentious  contentious  sententious  conscientious  Words that almost rhyme with unpretentious
census  fences  lenses  defences  defenses  offences  expenses  consensus  commences  consequences  tennis  precious  jealous  menace  penance  tenets  terrace  deafness  deathless  plenteous  rottenness  sentence  attendance  tremendous  careless  preface  tenants  vengeance  apprentice  fairness  pelvis  rebellious  reckless  repentance  tariffs  zealous  breathless  ferrous  lettuce  necklace  pellets  redness  senseless  chestnuts  dentists  licentious  parrots  portentous  barrenness  debits  hairless  headless  pendants  trellis  wellness  wetness  fellas  libellous  pennants  parents  presence  awareness  dependence  merits  peasants  helpless  infectious  restless  attendants  momentous  plexus  asbestos  embarrass  freshness  impetuous  lieutenants  nexus  stupendous  crevice  defenceless  defenseless  directness  helmets  prospectus  selfless  sheriffs  friendless  horrendous  legates  zealots  ascendance  carats  crevasse  dependance  ferrets  pubescence  ruggedness  setups  suppleness  independence  presents  develops  segments  defendants  descendants  correctness  marvellous  remembrance  remnants  chemists  dependents  semblance  transcendence  appellants  dependants  unfairness  demerits  filamentous  pheasants  descendents  propellants  acceptance  amendments  assessments  resemblance  adolescence  fluorescence  interdependence  forbearance  impairments  incestuous  independents  inherits  vestments  breakfasts  envelops  erysipelas  quiescence  resentments  senescence  crescents  manifestos  nonferrous  overzealous  unawareness  adolescents  acquiescence  coalescence  contestants  luminescence  obsolescence  refreshments  superintendence  effervescence  entrenchments  inflorescence  intrenchments  meaninglessness  omnipresence  quintessence  depressants  efflorescence  godparents  incandescence  incorrectness  recrudescence  investments  superintendents  antidepressants  convalescence  phosphorescence  disinfectants