Here's what rhymes with unionise.
                        
                        
                    
                                niece  peace  piece  cease  lease  apiece  geese  police  release  grease  obese  crease  fleece  colonise  modernise  cerise  increase  recognise  caprice  decease  harmonise  altarpiece  mortgagees  surcease  legalese  synchronise  decrease  masterpiece  centerpiece  patronise  antagonise  tailpiece  mantelpiece  revolutionise  Words that almost rhyme with unionise
knees  unease  these  leave  chief  receive  achieve  sees  teeth  fees  leaf  beef  cheese  keys  seas  seize  bees  naive  peas  reef  sheath  thief  weave  appease  wreath  fief  heath  heave  leash  sheaf  teas  tease  sneeze  unleash  chemise  leas  lees  lief  pease  reeve  sheave  tees  wheeze  seethe  hies  pees  quiche  sheathe  wreathe  trees  beneath  brief  please  relief  conceive  grief  perceive  agrees  breathe  breeze  relieve  underneath  freeze  motif  rupees  sleeve  grieve  pleas  trainees  cleave  fleas  frees  frieze  nominees  flees  internees  lessees  massif  skis  threes  returnees  trapeze  bereave  sarees  sleaze  sties  believe  disease  belief  analyses  guarantees  overseas  trustees  deceive  diocese  manganese  retrieve  squeeze  unbelief  appointees  dioceses  emphases  attendees  grandees  grantees  licensees  referees  reprieve  guaranties  mortise  oversees  pastiche  serif  amputees  dungarees  flyleaf  honeybees  interweave  matinees  nobodies  overleaf  parolees  posies  soirees  sprees  tepees  undeceive  interleave  manatees  screes  trochees  degrees  indices  prestige  decrees  devotees  bequeath  detainees  foresees  retirees  syntheses  absentees  addressees  conferees  legatees  leitmotif  palsies  chickpeas  draftees  invitees  scrutinise  aperitif  argosies  baksheesh  cloverleaf  debauchees  debrief  enlistees  inductees  jubilees  misconceive  pharisees  expertise  parentheses  appendices  interviewees  disagrees  disbelieve  displease  isosceles  consignees  franchisees  antifreeze  divorcees  escapees  abductees  bumblebees  chickadees  hypotheses  disbelief  deportees  idiosyncrasies  meets  meats  metes  weeks  chiefs  keeps  seats  seeks  sheets  cheeks  peaks  beats  heaps  feats  heats  leaks  leaps  reefs  antiques  beets  sheaths  wreaths  beaks  cheats  deeps  fiefs  weeps  heaths  jeeps  leeks  peeps  reaps  seeps  sheikhs  sneaks  teats  beeps  minx  reeks  sheiks  geeks  leafs  peeks  piques  wreaks  speaks  beasts  receipts  treats  elites  motifs  repeats  feasts  fleets  reliefs  sleeps  sweeps  sweets  briefs  creeks  creeps  griefs  shrieks  suites  yeasts  competes  conceits  freaks  greets  cleats  deceits  pleats  steeps  massifs  obliques  physiques  tweaks  techniques  beliefs  streets  priests  completes  critiques  defeats  retreats  streaks  boutiques  deletes  petites  bequeaths  entreats  parakeets  squeaks  requites  bespeaks  sweetmeats  depletes  plebiscites  leitmotifs  fifteenths  librettists  sixteenths