Here's what rhymes with signifiicance.
                        
                        
                    
                                Words that almost rhyme with signifiicance
deacons  weakens  beacons  recons  archdeacons  capsicums  sequence  misfeasance  teacups  thesis  weakness  allegiance  genus  secrets  venous  fetus  grievance  impedance  pretence  credence  meatus  meekness  peanuts  rhesus  specious  keenness  nevus  rebus  regents  spinous  frequents  sealants  viscus  betakes  lenience  mistiness  beechnuts  sapience  sleekness  speedups  heelless  pitas  zebus  zeniths  furriness  infrequence  sheilas  genius  treatise  needless  sweetness  grievous  leaflets  reflux  speechless  cheapness  heedless  meanness  neatness  osseous  seamless  sleepless  egregious  facetious  leafless  prius  saphenous  steepness  treeless  bleakness  malfeasance  mendicants  sentience  fleetness  seedless  silicious  theists  adieus  deepness  meatless  cleanups  eeriness  phoniness  sauciness  shiftiness  weedless  fieriness  merriness  sereneness  sorriness  fleeciness  prenups  savouriness  nippiness  agreements  achievements  ingenious  treatments  uniqueness  covetous  priestess  capitis  ferruginous  maleness  paleness  paribus  resinous  dreamless  femaleness  greenness  heartiness  loftiness  myelitis  bereavements  decedents  dirtiness  impeachments  messiness  behemoths  cheeriness  hugeness  meagreness  nacreous  noisiness  staleness  thriftiness  briefness  obliqueness  stoniness  tubeless  yeshivas  blurriness  martinets  rosiness  urethras  appeasements  artiness  boniness  cattiness  insentience  fanciness  snootiness  thorniness  leeriness  wapitis  podginess  convenience  antecedents  calcareous  disagreements  extremists  acacias  discreteness  parvenus  senoritas  slipperiness  sombreness  discreetness  extremeness  chanciness  repleteness  corniness  hungriness  severeness  sportiness  waxiness  intravenous  completeness  inconvenience  concreteness  libidinous  panaceas  margaritas  orthopedists  psychokinesis  telekinesis  candidness  orneriness  orthopaedists  enjambements  genteelness  heterogeneous  arteriovenous  incompleteness  trapezius  multitudinous  osteomyelitis  pulchritudinous  poliomyelitis  platitudinous