Here's what rhymes with oncessions.
                        
                        
                    
                                sessions  concessions  confessions  obsessions  possessions  impressions  professions  processions  regressions  expressions  depressions  transgressions  Words that almost rhyme with oncessions
heavens  lessons  seventh  resins  lessens  presence  eleventh  adolescence  fluorescence  acquiescence  convalescence  obsolescence  coalescence  luminescence  sections  weapons  infections  seconds  affections  conceptions  conventions  mentions  inventions  pensions  threatens  settles  lemons  melons  directions  vessels  connections  elections  exceptions  metals  objections  perceptions  rebels  sexes  sketches  tensions  corrections  fences  injections  legends  selections  attentions  inspections  medals  pebbles  perils  petals  tendons  connexions  contentions  dissensions  heralds  kettles  paras  perfections  receptions  wedges  wretches  levels  methods  questions  dimensions  collections  intentions  reflections  temples  devils  essentials  extensions  lenses  offences  stretches  apprehensions  exemptions  imperfections  intestines  pencils  strengthens  suspensions  alleges  antennas  deflections  guesses  intersections  rentals  umbrellas  possesses  stresses  suggestions  interventions  projections  resembles  successes  defences  defenses  dresses  presses  pretensions  agendas  commences  differentials  dilemmas  milliseconds  misconceptions  preconceptions  protections  rebellions  expenses  potentials  credentials  recollections  utensils  consequences  expresses  fundamentals  interconnections  projectiles