Philosophical :: Philosophical (a.) Of or pertaining to philosophy; versed in, or imbued with, the principles of philosophy; hence, characterizing a philosopher; rational; wise; temperate; calm; cool..
Philosophistical :: Philosophistical (a.) Of or pertaining to the love or practice of sophistry.
Philosophize :: Philosophize (v. i.) To reason like a philosopher; to search into the reason and nature of things; to investigate phenomena, and assign rational causes for their existence..