obsession

If you have an obsession, you're totally fixated on something and unhealthily devoted to it. Some common obsessions include fantasy football leagues, celebrity gossip, and Elvis memorabilia.

Obsession is kind of like a passion for something that crosses the line into crazy territory. Sometimes people get so preoccupied with their obsessions that it makes them anxious or emotionally unstable. If you have an obsession with the Yankees, for example, you might go to every single game, skip work to watch spring training, paper your room with Yankees posters, and write love notes to Derek Jeter.

Definitions of obsession
  1. noun
    an unhealthy and compulsive preoccupation with something or someone
    synonyms: fixation
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    type of:
    preoccupation
    an idea that preoccupies the mind and holds the attention
  2. noun
    an irrational motive for performing trivial or repetitive actions, even against your will
    synonyms: compulsion
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    types:
    onomatomania
    obsession with a particular word which the person uses repeatedly or which intrudes into consciousness
    type of:
    irrational motive
    a motivation that is inconsistent with reason or logic
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