Here's what rhymes with waning.
                        
                        
                    
                                gaining  raining  reigning  chaining  feigning  training  attaining  staining  draining  craning  remaining  obtaining  pertaining  retaining  straining  regaining  detaining  ordaining  containing  maintaining  sustaining  ascertaining  campaigning  appertaining  retraining  abstaining  refraining  disdaining  explaining  complaining  entertaining  restraining  constraining  uncomplaining  Words that almost rhyme with waning
aiming  naming  gaming  taming  maiming  shaming  claiming  framing  blaming  flaming  renaming  reclaiming  declaiming  inflaming  proclaiming  exclaiming  disclaiming  waiting  aging  weighing  waking  waving  aching  aiding  wailing  weighting  ailing  wading  waging  whaling  aping  waiving  making  taking  saying  changing  painting  raising  facing  laying  paying  ranging  saving  awaiting  dating  failing  rating  sailing  shaking  shaping  arranging  baking  bathing  fading  gazing  mating  racing  raging  wasting  basing  casing  chasing  fainting  gaping  lading  mailing  pacing  paving  railing  shading  shaving  swaying  hating  raiding  raking  raving  awaking  baiting  chafing  gating  gauging  hailing  nailing  paging  phasing  quaking  raping  tailing  taping  veiling  bailing  baying  caving  faking  haying  hazing  neighing  breaking  playing  placing  trading  amazing  praying  stating  staying  blazing  grading  grazing  scaling  spacing  staging  tracing  bracing  craving  grating  obeying  plating  praising  tasting  trailing  braking  equating  evading  glazing  phrasing  scathing  skating  slaying  acquainting  assailing  availing  effacing  erasing  flaking  parading  pasting  plaything  preying  staking  abating  allaying  assaying  basting  bewailing  braiding  braving  braying  draping  flailing  graying  plaguing  plaiting  creating  operating  relating  engaging  escaping  invading  modelling  surveying  behaving  debating  decaying  delaying  detailing  persuading  pervading  scraping  spraying  unchanging  updating  appraising  unfailing  bleating  curtailing  debasing  dilating  entailing  inhaling  mainspring  narrating  negating  rearranging  remaking  repaying  reshaping  straying  unveiling  actuating  buffeting  collating  revelling  strafing  prevailing  generating  replacing  separating  conveying  embracing  engraving  betraying  degrading  educating  elevating  emanating  exchanging  imitating  irritating  isolating  liberating  mediating  radiating  upgrading  agitating  allocating  animating  decorating  mistaking  oscillating  partaking  unavailing  blockading  cascading  crusading  deviating  forsaking  irrigating  moderating  overtaking  perforating  permeating  saturating  tolerating  automating  deflating  defraying  denaturing  enervating  inflating  innovating  nauseating  obviating  restating  retracing  situating  upbraiding  urinating  indicating  undertaking  alternating  fascinating  advocating  displaying  dominating  estimating  initiating  originating  activating  associating  cooperating  graduating  insulating  motivating  terminating  undulating  aggravating  alienating  alleviating  displacing  elaborating  escalating  evaporating  hesitating  meditating  mitigating  modulating  navigating  nominating  officiating  portraying  suffocating  validating  aggregating  annihilating  dedicating  delegating  disobeying  dissipating  emigrating  emulating  enumerating  germinating  interlacing  intimating  liquidating  masquerading  recreating  reiterating  remodelling  vacillating  antedating  corroborating  desolating  downgrading  hibernating  interchanging  overgrazing  percolating  relegating  renovating  resonating  ruminating  circulating  evaluating  penetrating  regulating  cultivating  devastating  eliminating  illuminating  illustrating  integrating  negotiating  translating  accelerating  accommodating  appreciating  celebrating  culminating  fluctuating  propagating  assimilating  captivating  collaborating  commemorating  countervailing  designating  exaggerating  exhilarating  invigorating  lubricating  perpetuating  regenerating  simulating  ameliorating  degenerating  deliberating  delineating  deprecating  duplicating  elucidating  eradicating  evacuating  excavating  fabricating  implicating  incubating  legislating  obliterating  paraphrasing  postulating  replicating  segregating  ventilating  vindicating  adjudicating  attenuating  denigrating  disengaging  dissociating  enunciating  fulminating  gravitating  inaugurating  instigating  interpolating  masturbating  mutilating  perpetrating  prostrating  recuperating  reinstating  reverberating  scintillating  subjugating  supplicating  tabulating  undeviating  calculating  stimulating  facilitating  incorporating  anticipating  compensating  complicating  coordinating  deteriorating  formulating  humiliating  appropriating  debilitating  disseminating  intimidating  necessitating  proliferating  speculating  conciliating  exasperating  interrogating  legitimating  refrigerating  repudiating  stipulating  accentuating  amalgamating  authenticating  coagulating  confiscating  consecrating  depreciating  emancipating  exacerbating  explicating  extricating  impersonating  inactivating  infuriating  ingratiating  inoculating  invalidating  menstruating  promulgating  unhesitating  communicating  demonstrating  participating  concentrating  contemplating  investigating  accumulating  differentiating  intoxicating  manipulating  precipitating  approximating  articulating  consolidating  excruciating  predominating  reciprocating  contaminating  exterminating  incriminating  subordinating  encapsulating  extenuating  preponderating  recirculating  remonstrating  discriminating  congratulating  disintegrating  electroplating