Here's what rhymes with vilainous.
                        
                        
                    
                                heinous  plainness  grayness  greyness  Words that almost rhyme with vilainous
famous  mandamus  ignoramus  lateness  basis  gracious  greatness  fallacious  painless  sameness  voracious  fracas  salacious  straightness  tailless  tameness  patience  courageous  spacious  stainless  cadence  nameless  outrageous  valence  audacious  blameless  faithless  herbaceous  hiatus  sebaceous  shameless  shapeless  strangeness  vivacious  waitress  bailiffs  baseless  faceless  faintness  graceless  weightless  patients  surveillance  efficacious  fragrance  platelets  reagents  tenacious  abeyance  capacious  tasteless  vexatious  ungracious  flirtatious  loquacious  quaintness  farinaceous  humaneness  intranets  profaneness  arrangements  acquaintance  payments  impatience  attainments  claimants  contagious  assailants  pavements  placements  basements  vagrants  mendacious  elaborateness  statements  advantageous  conveyance  replacements  homeostasis  ostentatious  complainants  complaisance  rearrangements  repayments  inpatients  engagements  displacements  emplacements  entertainments  misstatements  disadvantageous