If you are cogitating, you are thinking deeply about something. He sat silently cogitating. to cogitate on the meaning of life. + cogitation cogi·ta·tion After much cogitation, we decided to move to the Isle of Wight. to think carefully and seriously about something (past participle of cogitare, from co- ( CO-) + agitare ( AGITATE))
use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments; "I've been thinking all day and getting nowhere"