cogitate
/ˈkɒdʒɪteɪt/verb
To think about something carefully and deeply.
Example sentences
- “Give me a day to cogitate on your offer before I decide.”
- “He sat cogitating over the crossword for most of the afternoon.”
Deliberately heavy, often used with a wink where 'think' would do. The same Latin root gives 'cogito ergo sum'.