Here's what rhymes with fiian.
                        
                        
                    
                                ian  zijn  eon  dn  paean  peon  chorion  ruffian  boolean  lndian  occafion  plebeian  protean  epicurean  Words that almost rhyme with fiian
iam  cerium  cilium  museum  labium  samarium  solarium  mausoleum  coliseum  francium  imperium  encomium  trapezium  protactinium  season  eaten  heathen  seamen  seaman  semen  elan  phaeton  didn  reason  region  lesion  beaten  demon  weaken  deacon  deepen  legion  needn  beacon  freeman  reafon  renin  daemon  diesen  sweeten  cheapen  wheaten  sequin  steepen  neaten  treason  adhesion  cohesion  uneven  chieftain  freedmen  freedman  elision  cretin  pigpen  overeaten  secretion  deletion  accretion  artesian  unbeaten  collegian  preseason  fieldsman  depletion  excretion  policeman  archdeacon  repletion  postseason  completion  polyhedron  amphotericin  tetrahedron  plainclothesman