D defs.my
Entry 1 sense Webster, 1913

philosophize

/(fĭ*lŏs"ō̇*fīz)/ · phi·los·o·phize · IPA /fɪˈlɒsəfaɪz/
01 v. i. To reason like a philosopher; to search into the reason and nature of things; to investigate phenomena, and assign rational causes for thei…
imp. & p. p. Philosophized; p. pr. & vb. n. hilosophizing
  1. 1.
    To reason like a philosopher; to search into the reason and nature of things; to investigate phenomena, and assign rational causes for their existence.
    “Man philosophizes as he lives. He may philosophize well or ill, but philosophize he must.” Sir W. Hamilton.