Become demented
Decline and become demented are semantically related. in break down mentally topic. In some cases you can use "Decline" instead a verb phrase "Become demented".
Decline
Decline verb - To show unwillingness to accept, do, engage in, or agree to.
Become demented and decline are semantically related. Sometimes you can use "Become demented" instead a verb "Decline".
Mutual synonyms
Cite this Source
Decline and Become demented. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/become_demented/decline
Become demented & Decline. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/become_demented/decline>.
Decline or Become demented. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/become_demented/decline.
Google Ngram Viewer shows how "become demented" and "decline" have occurred on timeline