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