Here's what rhymes with yllis.
                        
                        
                    
                                villus  bacillus  Words that almost rhyme with yllis
villas  eras  cirrus  guerrillas  gorillas  guerillas  papyrus  illness  limits  vicious  richness  fearless  grimace  isthmus  listless  litmus  rivets  billets  hillocks  sinless  riddance  business  religious  minutes  witness  bishops  impulse  thickness  visits  fitness  sickness  delicious  digits  influx  malicious  stillness  tickets  brilliance  citrus  viscous  elicits  frigates  pickets  thickets  avaricious  bigness  crickets  dimness  discus  ingots  ingress  officious  pittance  pivots  resistless  sinuous  triplets  distance  instance  infants  ambitious  clearance  mistress  judicious  pernicious  prodigious  stiffness  auspicious  biscuits  capricious  assiduous  eyewitness  nutritious  propitious  quickness  seditious  trinkets  irreligious  remittance  appearance  assistance  interests  resistance  spirits  exhibits  forgiveness  suspicious  fictitious  inhibits  shipments  admittance  hindrance  pigments  prestigious  prohibits  archbishops  diffidence  meniscus  strictness  swiftness  cystitis  factitious  indigence  instants  repetitious  unfitness  existence  adherence  assistants  insistence  persistence  coherence  reappearance  reminiscence  eucalyptus  injudicious  surreptitious  coefficients  commitments  subsistence  adherents  superstitious  delinquents  adventitious  consistence  expeditious  transmittance  interference  disappearance  perseverance  coexistence  contingents  distinctness  incoherence  infringements  nonexistence