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