Here's what rhymes with unpaffable.
                        
                        
                    
                                laughable  Words that almost rhyme with unpaffable
passable  chasuble  impassable  impassible  satiable  savable  compatible  tangible  palpable  taxable  fallible  cannibal  blamable  bankable  radical  valuable  diagonal  adaptable  implacable  infallible  intangible  mandible  octagonal  tractable  detachable  flammable  impalpable  merchantable  nontaxable  cantabile  unflappable  fanciable  national  practical  rational  casual  incompatible  invaluable  maximal  intractable  factional  inflammable  verapamil  cantonal  madrigal  unpractical  graspable  frangible  attractable  declarable  nondetachable  grammatical  irrational  understandable  fractional  impractical  clavicle  interactional  collapsible  expandable  retractable  nonflammable  international  hexagonal  lnternational  transactional  ungrammatical  semiannual  multinational  transnational  supranational