- (passive, constructed with "with") To be preoccupied with a single topic or emotion.
- Some people are obsessed with sports.
- 2014 June 21, “Magician’s brain”, in The Economist, volume 411, number 8892:
- The [Isaac] Newton that emerges from the [unpublished] manuscripts is far from the popular image of a rational practitioner of cold and pure reason. The architect of modern science was himself not very modern. He was obsessed with alchemy.
- (transitive) To dominate the thoughts of someone.
- Thoughts of her obsess my every waking moment.
- (intransitive, colloquial, construed with over) To think or talk obsessively about.
- Stop obsessing over it, will you!
to be preoccupied with a single topic or emotion
to dominate the thoughts of someone
to think or talk obsessively about
- obsess in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
- obsess in The Century Dictionary, The Century Co., New York, 1911