Here's what rhymes with dismissable.
                        
                        
                    
                                miscible  kissable  permissible  admissible  inadmissible  transmissible  inexplicable  utilisable  Words that almost rhyme with dismissable
visible  livable  invisible  pivotal  divisible  derivable  unlivable  municipal  forgivable  relivable  unforgivable  mixable  minimal  miracle  syllable  despicable  tillable  billable  steerable  biddable  fixable  winnable  ignitible  original  typical  mythical  invincible  medicinal  pitiful  pinnacle  thinkable  binnacle  spiracle  resistible  finagle  shrinkable  bridgeable  sinkable  clinical  criminal  visual  biblical  fictional  irresistible  hospitable  satirical  unthinkable  divisional  explicable  frictional  drinkable  printable  pinochle  unsinkable  transmittable  refillable  extricable  political  additional  reciprocal  predictable  aboriginal  equivocal  juridical  polygonal  positional  volitional  definitional  quizzical  unoriginal  thimbleful  undrinkable  unprintable  individual  traditional  conditional  nutritional  provisional  transitional  oppositional  biophysical  dispositional  geophysical  pontifical  subclinical  diacritical  nonclinical  cognitional  nonfictional  nonrefillable  unpredictable  unequivocal  jurisdictional  prepositional  depositional  psychophysical  unconditional  compositional  propositional  transcriptional  astrophysical  nonreciprocal  inquisitional  nontraditional