pack rat

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A person who hoards objects of little worth—e.g., string, old newspapers, etc.—or sentimental value. The pack rat mentality is typical of obsessive-compulsive disorder

pack rat

Psychiatry A person who hoards objects of little worth–eg, string, old newspapers, etc–and lacking sentimental value; the PR mentality is typical of OCD. Cf Obsessive-compulsive disorder.