Here's what rhymes with slacky.
                        
                        
                    
                                lackey  tacky  wacky  Words that almost rhyme with slacky
shaggy  baggy  craggy  scraggy  assay  alley  rally  abbey  radii  acne  ani  abbe  acme  flabby  flashy  lanky  ashy  laddie  lassie  ratty  anti  carry  happy  valley  fatty  frankly  algae  ante  taxi  daddy  flatly  galley  glassy  grassy  paddy  shabby  chassis  patchy  sally  tally  canny  clammy  hackney  nanny  savvy  waxy  adze  auntie  brassy  catchy  chatty  classy  cranky  cranny  dally  granny  scratchy  snappy  tabby  tali  trashy  bani  cabbie  cabby  caddy  catty  fanny  hanky  maxi  nappy  natty  navvy  patty  raspy  sappy  sassy  scrappy  taffy  angry  badly  fancy  sandy  amply  brandy  candy  gladly  handy  lastly  manly  nasty  sadly  scanty  aptly  cadre  verbally  crafty  dandy  fiancee  finale  madly  blankly  granary  haply  shanty  bandy  grandee  lamprey  chancy  drafty  draughty  pansy  panty  scraggly  straggly  tangy  unhappy  efficacy  vastly  ghastly  uncanny  pantry  blandly  grandly  yeomanry  gantry  miscarry  palfrey  rectally  exactly  abstractly  vacantly  vigilante  bastardy  inaptly  chimpanzee  immeasurably  profligacy  communally  compactly  homeopathy  intermarry  polyandry  immutably  inefficacy  osteopathy  pederasty  sycophancy  satisfactory  necromancy  homoeopathy  angioplasty  abominably  indisputably  interminably