Here's what rhymes with niiing.
                        
                        
                    
                                being  seeing  keying  peeing  teeing  hieing  kneeing  geeing  weeing  pieing  piing  fleeing  freeing  skiing  unseeing  untying  treeing  retying  skying  emceeing  agreeing  unvarying  strewing  chivvying  chivying  overseeing  foreseeing  sightseeing  decreeing  farseeing  refereeing  pureeing  reburying  squeegeeing  alibiing  flambeing  guaranteeing  phantasying  bestrewing  garnisheeing  fricasseeing  disagreeing  filigreeing  Words that almost rhyme with niiing
feeling  meaning  leading  leaving  meeting  teaching  dealing  hearing  keeping  reaching  seeking  feeding  healing  heating  beating  ceiling  leaning  seeming  kneeling  needing  seizing  weaving  weeping  ceasing  cheating  heaving  leaping  leasing  peering  sealing  seating  teasing  beaming  leaching  leaking  peeling  peeping  reaping  reeling  seeding  seething  teeming  weaning  weeding  wheeling  ceding  deeming  heaping  heeding  jeering  kneading  peaking  reeking  seeping  sheathing  sheeting  thieving  wheezing  beading  leafing  pealing  peeking  piecing  teaming  teething  wreaking  heeling  keening  reaming  wreathing  beaching  beeping  leeching  phishing  reefing  riving  seaming  beefing  cheeping  chinning  deeding  weening  cheeking  keeling  leaguing  piquing  reeving  vicing  beaning  leashing  sheaving  peeving  speaking  bleeding  breathing  preaching  sleeping  treating  achieving  appealing  breeding  cleaning  freezing  pleasing  sweeping  yielding  creeping  dreaming  greeting  pleading  releasing  stealing  annealing  fleeting  gleaming  grieving  shielding  speeding  steaming  bleaching  briefing  creaking  endearing  feasting  machining  realising  scheming  seedling  shrieking  sneaking  unceasing  wielding  beseeching  cleaving  impeding  repealing  rereading  sneezing  unfeeling  unmeaning  appeasing  breaching  careening  creasing  fielding  gleaning  greening  imbibing  needling  rehearing  reheating  reviling  steeping  unleashing  weakling  beetling  creaming  freaking  greasing  impeaching  preening  tweaking  wheedling  fleecing  reseeding  steeling  unseating  beseeming  breezing  resealing  reteaching  unsealing  bereaving  bleeping  perilling  queening  refiling  sleeting  spiting  unreeling  sleeking  weaseling  mitring  spieling  tweeting  increasing  preceding  receiving  believing  competing  exceeding  misleading  repeating  revealing  screening  intriguing  perceiving  relieving  screaming  streaming  concealing  conceiving  deceiving  defeating  policing  receding  redeeming  retreating  squeezing  besieging  conceding  deleting  fatiguing  retrieving  unyielding  convening  demeaning  entreating  inbreeding  misreading  overeating  screeching  squeaking  squealing  unreasoning  acceding  defiling  preheating  seceding  streaking  unappealing  unpleasing  congealing  esteeming  striping  energising  idealising  imperilling  unfreezing  crisping  faceting  relining  undeceiving  unsheathing  anodising  leafleting  deceasing  pinwheeling  reprieving  uprearing  valeting  aggrieving  misspeaking  restring  iodising  misdealing  rosining  gimleting  proceeding  completing  decreasing  intervening  succeeding  emphasising  secreting  debriefing  depleting  interweaving  overheating  overweening  unbelieving  bequeathing  critiquing  mobilising  modernising  overhearing  overreaching  safekeeping  bespeaking  calcining  concreting  equalising  interceding  interleaving  maltreating  moralising  overfeeding  stampeding  mistreating  underfeeding  finalising  inveigling  legalising  penalising  refreezing  sidelining  vitalising  canalising  immunising  mechanising  nonspeaking  subleasing  tyrannising  urbanising  channelising  feminising  idolising  nonfreezing  receipting  womanising  hosteling  nonyielding  stylising  surceasing  chagrining  nasalising  novelising  organising  displeasing  superseding  utilising  civilising  interbreeding  excreting  fertilising  generalising  neutralising  socialising  supervening  symbolising  tantalising  humanising  localising  normalising  synthesising  underachieving  eulogising  formalising  naturalising  reconvening  subfreezing  cartwheeling  fantasising  guillotining  immobilising  overachieving  oversleeping  solemnising  initialising  signalising  verbalising  vocalising  marbleizing  obsoleting  serialising  vandalising  alkalising  analogising  calcimining  fossilising  routinising  recognising  disbelieving  specialising  stabilising  apologising  centralising  crossbreeding  demoralising  rationalising  reorganising  globalising  liberalising  monopolising  nationalising  sterilising  visualising  brutalising  evangelising  fraternising  galvanising  homogenising  internalising  materialising  noncompeting  quarantining  revitalising  immortalising  metabolising  misconceiving  mythologising  personalising  predeceasing  scandalising  trivialising  vulcanising  commercialising  demobilising  memorialising  trampolining  cannibalising  federalising  pluralising  rhapsodising  westernising  anthologising  disesteeming  preconceiving  scrutinising  actualising  capitalising  dehumanising  externalising  marginalising  criminalising  hypothesising  radicalising  attitudinising  overemphasising  volatilising  devitalising  fictionalising  metastasising  silkscreening  emotionalising  destabilising  industrialising  decentralising  disorganising  universalising  denationalising  depersonalising  editorialising  overgeneralising  hospitalising  recapitalising  conceptualising  individualising  professionalising  photosynthesising  sensationalising  decriminalising  internationalising  intellectualising  sentimentalising  conventionalising  institutionalising  contextualising  compartmentalising