Here's what rhymes with paltriest.
                        
                        
                    
                                theist  shiest  sliest  wiliest  puniest  sultriest  chariest  laciest  gaudiest  messiest  corniest  gamiest  fruitiest  wintriest  pastiest  scaliest  tangiest  mousiest  mangiest  untidiest  crispiest  unwariest  unloveliest  unmanliest  unhandiest  Words that almost rhyme with paltriest
leant  briefest  tliat  bleakest  leanest  realest  liefest  recent  deepest  cheapest  regent  weakest  keenest  meanest  chiefest  cleanest  licit  neatest  fleetest  meekest  reshipped  sheerest  reedit  sleekest  serest  treatment  decent  sweetest  leaflet  peanut  sicut  piquant  seulement  steepest  sealant  preachment  serenest  meagerest  obscenest  agreement  secret  frequent  bereavement  decedent  antient  machinist  sequenced  bafflement  completest  sapient  orthopedist  seafront  pointillist  discreetest  orthopaedist  beechnut  uncleanest  woodenest  achievement  indecent  sentient  appeasement  maltreatment  pretreatment  defilement  benignant  disablement  impalement  beguilement  pantomimist  revilement  cajolement  regalement  disagreement  impeachment  infrequent  mendicant  mistreatment  enfeeblement  ennoblement  enjambement  convenient  concealment  intercollegiate  insentient  underachievement  inconvenient  inconvenienced