obsess
Pronunciation:
/əbˈsɛs/verb
Definitions
(passive, constructed with "with") To be preoccupied with a single topic or emotion.
Example: Some people are obsessed with sports.
To dominate the thoughts of someone.
Example: Thoughts of her obsess my every waking moment.
(construed with over) To think or talk obsessively about.
Example: Stop obsessing over it, will you!