Also, how the Doctor’s cogitating manner was attributable to his being always engaged in looking out for Greek roots; which, in my innocence and ignorance, I supposed to be a botanical furor on the Doctor’s part, especially as he always looked at the ground when he walked about, until I understood that they were roots of words, with a view to a new Dictionary which he had in contemplation.
There are no more uses of "cogitate" in the book.
Show samples from other sources
But, exhausted by his cogitation, he’d have energy left for only one word, the name of the flower.
Gail Carson Levine -- Ella Enchanted
The average squirrel cogitation goes something like this: I wonder what there is to eat.