dementive adjective2 •Causing, characterized by, or characteristic of dementia; senile.It is essential to define if the brain atrophy detected in the patient is caused by normal aging or dementive disease or overlapping of both processes. — 2008 •(old-fashioned) Having or describing the worst, most debilitating state of a mental disorder.In nearly every case of madness there comes a period when all danger of injury to any one totally disappears, and dementive fatuity or general paralysis ensues. — 1870
