Here's what rhymes with knocken.
                        
                        
                    
                                Words that almost rhyme with knocken
logon  toboggan  often  auction  oxen  common  foreign  cotton  fallen  margin  option  organ  caution  gotten  pollen  rotten  toxin  cation  orphan  soften  arson  darken  hearken  robin  sodden  auxin  bobbin  rosin  marten  warren  lawman  marlin  martin  harken  tauten  doctrine  portion  carbon  fortune  garden  sovereign  bargain  pardon  uncommon  foreman  broaden  jargon  parson  shorten  shotgun  torsion  trodden  wanton  warden  carton  dolphin  foremen  harden  sharpen  watchman  carmine  cordon  barman  godson  marksman  tartan  hearten  oarsman  tarpon  corpsman  barmen  bonbon  coarsen  gorgon  smarten  sporran  conman  forgotten  adoption  abortion  horsemen  infarction  befallen  cauldron  horseman  apportion  concoction  herniation  libation  caldron  spartan  bondman  bondmen  motorman  motormen  yachtsman  bargeman  muskoxen  yardman  yardmen  misfortune  exhaustion  precaution  squadron  antitoxin  downtrodden  bondsman  contortion  longshoreman  unforgotten  cardamon  proportion  absorption  distortion  resorption  extortion  sportsman  dishearten  misbegotten  reapportion  foreshorten  kindergarten  antiabortion  calumniation  hydrocarbon  radiocarbon  fluorocarbon  disproportion  prekindergarten