obsess
//əbˈsɛs//
Verb
obsessInfinitive
obsessPresent tense
obsessedPast tense
obsessedPast participle
obsessingPresent participle
obsessesThird-person singular
1
To preoccupy or fill the mind of someone continually and to a troubling extent.
The fear of failure obsessed him for years.
2
To be constantly thinking about something or someone in a way that is not healthy or normal.
She obsesses over every small detail of her appearance.