名词

1. 着迷；困扰；强迫观念
If you say that someone has an obsession with a person or thing, you think they are spending too much time thinking about them.

1. an unhealthy and compulsive preoccupation with something or someone

Synonym: fixation

2. an irrational motive for performing trivial or repetitive actions, even against your will

e.g. her compulsion to wash her hands repeatedly

Synonym: compulsion