Use 'dwell upon' when noting someone's lingering attention on a specific topic, beyond what's typical.

Extended Focus

'Dwell upon' often implies a negative judgment of spending too much time on a topic, especially worries or past events.

Negative Connotation

Suggests a person is overthinking when 'dwell upon' is used, possibly causing unnecessary stress.

'Dwell upon' indicates a thoughtful, introspective attitude, often about serious or complex matters.

When problem-solving, 'dwell upon' may highlight issues needing careful consideration or solutions.

In literary study, 'dwell upon' indicates an in-depth analysis of themes, motives, or characters.