Here's what rhymes with maddening.
                        
                        
                    
                                saddening  gladdening  Words that almost rhyme with maddening
happening  imagining  fattening  battening  flattening  nonfattening  addling  managing  rationing  fashioning  fastening  paddling  annulling  saddling  cannoning  paddocking  challenging  abandoning  balancing  dazzling  baffling  galloping  blackening  channeling  haggling  slackening  ambling  balloting  cackling  dampening  paneling  mangling  mantling  barreling  captioning  unfastening  waggling  hassling  racketing  raveling  barracking  ravelling  unsaddling  faggoting  traveling  travelling  gambling  dangling  babbling  battling  canceling  cancelling  canvassing  sanctioning  scavenging  unraveling  wrangling  bracketing  dabbling  patenting  shambling  unravelling  refashioning  ballasting  gabbling  ratcheting  scalloping  unbalancing  calendaring  handcuffing  captaining  impaneling  gravelling  refastening  trammelling  empaneling  trammeling  damasking  frazzling  practicing  inhabiting  scaffolding  straggling  fragmenting  blanketing  stabling  bedazzling  outbalancing  escalloping  dismantling  scrambling  strangling  reexamining  scrabbling  bankrupting  overbalancing  bedraggling  counterbalancing  unscrambling  nonpracticing