1) Cerebrate 2) Cogitate 3) Philosophise 4) Reason philosophically 5) Think 1) Ideate 2) Philosophise 
• (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.
Phi·los'o·phize intransitive verb [ imperfect & past participle Philosophized ; present participle & verbal noun Philosophizing .] To reason like a philosopher; to search into the reason and nature of things; to investigate phenomena, and...
[v] - reason philosophically
philosophize, philosophizing, philosophizer 1. To speculate in a philosophical manner. 2. To set forth or express a moralistic, often superficial philosophy. 3. To consider (a matter) from a philosophical standpoint. You may take a self-scoring quiz over some of the words in this section by just clicking this Philo Quiz #1 l...