mental deterioration

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

There had been appearances that showed his mental deterioration before that, and there would be others afterward.

From Slate • Jan. 9, 2026

Another group of hikers, including an EMT, evaluated Zane’s condition once they noticed his mental deterioration.

From Los Angeles Times • Jun. 30, 2025

Press should report this as incoherent, displaying mental deterioration.

From Salon • Aug. 13, 2024

The symptoms of Huntington’s disease, mental deterioration and uncontrollable movements, usually do not appear until middle age.

From Textbooks • Jan. 1, 2018

As I show in my report, these and other physical and mental deterioration syndromes can be predicted with statistically significant results by the application of my new formula.

From "Flowers for Algernon" by Daniel Keyes