Here's what rhymes with catamorphisms.
                        
                        
                    
                                polymorphisms  Words that almost rhyme with catamorphisms
martingales  modicums  yardages  nonages  hospitals  follicles  cornices  varnishes  vortices  cortices  prioritise  garnishes  tarnishes  chronicles  polishes  demolishes  drawbridges  prodigals  swastikas  harmonicas  ravishes  signorinas  periodicals  impoverishes