Obsess
Origin
From Latin obsessus, perfect passive participle of obsideÅ ("sit on or in, remain, besiege"), from ob ("before") + sedeÅ ("I sit"); see sit, session, etc.; compare assess, possess.
Full definition of obsess
Verb
- (passive, constructed with with) To be preoccupied with a single topic or emotion.Some people are obsessed with sports.
- (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!