Dement is a term used to describe a mental disorder or illness. It is characterized by a decline in cognitive functioning, memory loss, and changes in behavior. The crossword solutions for the term Dement are DERANGE (7 letters), IRIS (4 letters), and UNHINGE (7 letters). DERANGE means to disturb the order of something, IRIS refers to the colored part of the eye, and UNHINGE means to cause someone to become mentally unstable. Together, these words provide insight into the symptoms and effects of Dement.