Here's what rhymes with protophilosophical.
                        
                        
                    
                                philosophical  theosophical  Words that almost rhyme with protophilosophical
logical  conical  comical  hospital  economical  rhetorical  tropical  chronicle  illogical  metaphorical  ironical  philological  zoological  serological  urological  horological  historical  biological  psychological  physiological  theological  ecological  astronomical  geological  neurological  paradoxical  periodical  mythological  pedagogical  phonological  analogical  astrological  diabolical  symbolical  ahistorical  dialogical  dropsical  ethological  astronautical  speleological  ideological  technological  archaeological  pathological  sociological  chronological  morphological  ontological  categorical  histological  immunological  radiological  subtropical  teleological  topological  typological  archeological  ethnological  hydrological  microscopical  mineralogical  uneconomical  aetiological  hematological  unhistorical  haematological  semitropical  gastronomical  pocketsful  methodological  eschatological  pharmacological  etiological  neurophysiological  terminological  embryological  tautological  toxicological  biotechnological  dermatological  gynaecological  ornithological  audiological  prehistorical  taxonomical  nontropical  genealogical  meteorological  bacteriological  gynecological  musicological  epidemiological  phenomenological  neuropsychological  electrophysiological  psychophysiological  microbiological