Here's what rhymes with polytheistical.
                        
                        
                    
                                mystical  sophistical  egoistical  statistical  logistical  egotistical  Words that almost rhyme with polytheistical
physical  critical  cynical  elliptical  lyrical  whimsical  tricycle  finical  empirical  atypical  inimical  rhythmical  encyclical  arrhythmical  analytical  cylindrical  umbilical  uncritical  apolitical  rabbinical  parasitical  untypical  archetypical  overcritical  indivisible  geopolitical  hypocritical  preclinical  subliminal  supercritical  impermissible  nonphysical  nonpolitical  hypercritical  noncritical  unpolitical  metaphysical  sociopolitical  stereotypical  prototypical  psychoanalytical  noncriminal