Here's what rhymes with facultative.
                        
                        
                    
                                dative  native  creative  collaborative  iterative  oxidative  radiative  annotative  cooperative  authoritative  qualitative  imitative  vegetative  educative  connotative  nonnative  cogitative  legislative  innovative  appreciative  associative  evaluative  deliberative  meditative  dissipative  evaporative  denotative  copulative  emulative  quantitative  integrative  dissociative  regulative  procreative  stimulative  unappreciative  interpretative  manipulative  rehabilitative  accumulative  administrative  investigative  nonadministrative  Words that almost rhyme with facultative
cages  sages  rages  mutatis  phages  wadis  wadges  engages  bellyaches  macrophages  reengages  disengages  greengages  plaintive  pervasive  abrasive  evasive  invasive  persuasive  dissuasive  unpersuasive  nonabrasive  noninvasive