obsessive-compulsive

adj.
Relating to or characterized by a tendency to dwell on unwanted thoughts or ideas or perform certain repetitious rituals, especially as a defense against anxiety from unconscious conflicts: obsessive-compulsive behavior.

n.
An obsessive-compulsive person.

adj.

Having a tendency to dwell on unwanted thoughts or perform certain repetitious rituals, especially as a defense against anxiety from unconscious conflicts.

n.

A person who exhibits obsessive-compulsive behavior.

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The adjective has one meaning:

Meaning #1: characterized by obsessions and compulsions

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