Here's what rhymes with mentiendum.
                        
                        
                    
                                Words that almost rhyme with mentiendum
chiefdom  diesem  fiefdom  teatime  sheikdom  sheikhdom  freedom  rerum  cerium  hominum  labium  threesome  museum  imperium  encomium  capsicum  cilium  arboretum  samarium  francium  mausoleum  solarium  trapezium  coliseum  protactinium