Characterized by or marked by deep, absorbed contemplation; profoundly thoughtful.
From Latin 'cogitabundus' with the suffix '-ous' (full of), emphasizing the quality of being lost in thought. An alternate or more elaborate form of cogitabund.
This is the most ornate version of 'lost in thought'—cogitabundous really emphasizes that someone is deeply, philosophically absorbed in their own mind!
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