Wiktionary
dementing
a. Causing dementia.
Usage examples of "dementing".
Instead, everyone ignored the mad muttering lunatic, as if a dementing lunatic standing on the sidewalk in broad daylight in the middle of New York was the most natural thing in the world.
The dementing lunatic he had seen talking -- almost shouting -- on the street.
That was why nobody had called the cops to take away the dementing lunatic.
The 36-hour day: A family guide to caring for persons with Alzheimer's Disease, related dementing illness and memory loss in later life.