obsession
1. [ noun ] (psychology) an irrational motive for performing trivial or repetitive actions against your will
Synonyms: compulsion
Related terms: irrational_motive onomatomania
2. [ noun ] (psychology) an unhealthy and compulsive preoccupation with something or someone
Synonyms: fixation
Related terms: preoccupation voyeurism haunt fixate
Similar spelling:   obsessional
  obsess
  obsessive
  objection
  obsessivity
  obsessively
  obsessed
  obsequious