Hoarding is the excessive acquisition and retention of items that are not needed or for which no space is available. It can be a symptom of obsessive-compulsive disorder or a separate disorder with its own criteria and treatment options. Hoarding is a mental health disorder. Explore its symptoms and available treatments. Learn how hoarding disorder affects individuals, and the benefits of seeking help for this often-misunderstood condition. Hoarding definition : the act of a person or animal that hoards.. See examples of HOARDING used in a sentence. Hoarding Published Oct 25, 2023 Definition of Hoarding Hoarding refers to the act of accumulating and storing excessive amounts of goods or resources beyond what is necessary or reasonable. It is often characterized by an irrational fear of scarcity or a desire for control over possessions.