Here's what rhymes with seder.
                        
                        
                    
                                nadir  raider  evader  wader  staider  trader  invader  grader  crusader  persuader  masquerader  blockader  Words that almost rhyme with seder
vapor  aber  sabre  hater  saber  later  nature  major  paper  labor  neighbor  waiter  taper  cater  wager  freighter  pater  rater  caper  pager  skater  gator  tabor  dater  gaiter  tater  raper  wagerer  greater  traitor  crater  aviator  levator  scraper  straighter  draper  grater  prater  sedater  operator  creator  elevator  equator  oscillator  debater  innovator  rotator  violator  belabor  denature  headwaiter  collator  gyrator  crocheter  generator  mediator  dictator  educator  activator  agitator  alligator  curator  insulator  moderator  navigator  radiator  decorator  evaporator  imitator  obturator  respirator  escalator  animator  idolater  annotator  renovator  adulator  hibernator  inhalator  legislature  indicator  translator  legislator  accelerator  modulator  negotiator  originator  simulator  ventilator  actuator  alternator  applicator  carburetor  evaluator  illustrator  instigator  excavator  gladiator  incinerator  detonator  emulator  fabricator  percolator  cooperator  fornicator  pollinator  vindicator  dedicator  dehydrator  dumbwaiter  litigator  nominator  castigator  decelerator  defoliator  exaggerator  fumigator  corroborator  abrogator  refrigerator  arbitrator  commentator  regulator  collaborator  facilitator  incubator  perpetrator  speculator  integrator  procurator  stimulator  liquidator  adjudicator  conciliator  duplicator  eliminator  formulator  lubricator  infiltrator  resuscitator  eradicator  mutilator  peculator  insinuator  denominator  investigator  coordinator  nomenclature  calculator  defibrillator  demonstrator  interrogator  appropriator  exterminator  consolidator  prevaricator  dissimulator  repudiator  decapitator  administrator  accumulator  communicator  manipulator  discriminator  contaminator  expropriator  procrastinator  prognosticator  favor  favour  acre  agar  safer  sailor  aver  savor  savour  seiner  hacer  saver  shaker  saner  vaguer  shaver  faker  hazer  vainer  fayer  sager  haler  fainer  failure  layer  laser  maker  mayor  flavor  tailor  flavour  razor  scalar  wafer  waiver  baker  fainter  savior  taker  baser  jailer  maner  payer  raiser  slayer  spacer  waver  chaser  gainer  gayer  maser  racer  slaver  tamer  whaler  bather  framer  jailor  mailer  pacer  assayer  baler  frailer  gamer  essayer  stayer  caver  lamer  raver  staler  elver  caner  wailer  danger  chamber  player  painter  breaker  glacier  labourer  planar  surveyor  tracer  trailer  trainer  graver  manger  attainder  braver  changer  papier  plainer  purveyor  ranger  strainer  arranger  atelier  blazer  eraser  inhaler  planer  sprayer  grayer  quaver  taster  waster  greyer  bracer  chaster  defamer  drainer  grazer  baster  claimer  naysayer  defacer  opaquer  wavier  urbaner  inaner  insaner  unsafer  behavior  remainder  stranger  conveyor  retainer  appraiser  bilayer  disfavor  disfavour  soothsayer  conveyer  modeller  abstainer  statelier  humaner  quainter  delayer  gainsayer  saltshaker  doomsayer  loudhailer  finagler  waylayer  container  endanger  engraver  exchanger  disclaimer  betrayer  campaigner  partaker  gamester  declaimer  poetaster  automaker  cockchafer  restrainer  boneshaker  astuter  monolayer  entertainer  undertaker  complainer  boilermaker  moneymaker  semiquaver  semitrailer  programer  misbehavior  multilayer  policymaker  troublemaker  multiplayer  photoengraver  cabinetmaker