Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
deteriorate mentally
Grammar usage guide and real-world examplesUSAGE SUMMARY
"deteriorate mentally" is correct and usable in written English. You can use it when discussing a decline in mental health or cognitive function. Example: "After years of stress, he began to deteriorate mentally." Alternative expressions include "decline mentally" and "worsen mentally."
✓ Grammatically correct
News & Media
Wiki
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
6 human-written examples
On that evening last October, Mrs. Mackey added another N.F.L. wife to her growing network of women who seek her guidance and support as their husbands deteriorate mentally.
News & Media
It is also the first to study the matter prospectively, first finding the disordered sleeping pattern in healthy people without dementia, and then checking, years later, to see if they were more likely than regular sleepers to deteriorate mentally.
News & Media
As Torrance begins to deteriorate mentally - having some frightening visions of his own, all leading him to the notion of killing his family - the sprawling hotel, buried under huge snowdrifts, begins to feel more and more claustrophobic.
News & Media
She is beginning to deteriorate mentally, drinking quite a lot of sherry though she never drank at all while his father was alive, but she is still lucid enough so that he takes her out in the city fairly often, to dinner or to the theatre, which she loves; twice he has taken her to Europe.
News & Media
Claustrophobic in a Big Space As Torrance begins to deteriorate mentally -- and to have some frightening visions of his own, all leading him to the notion of killing his family -- the sprawling hotel, buried under huge snowdrifts, begins to feel more and more claustrophobic.
News & Media
It took those infamous 1940's terry-cloth monkey studies to prove what every parent instinctively knows: children deprived of affection deteriorate, mentally and physically.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
Mine had deteriorated mentally, but was strong physically.
News & Media
Prosecutors will argue that Mr. Marshall and Mr. Morrissey knew that Mrs. Astor, suffering from Alzheimer's disease, had deteriorated mentally, but that they exploited her ailments to trick her into directing millions of dollars their way, according to the indictment and lawyers briefed on the case.
News & Media
Levinah Murphy, who was caring for her eight-year-old son Simon and the two young children of William Eddy and Foster, had deteriorated mentally and was nearly blind.
Wiki
His personal troubles continued: his son Walter died while overseas, his wife Maria White Lowell died in October 1853, his father became deaf, and his sister Rebecca was deteriorating mentally such that she often went without speaking for weeks.
Wiki
Her death will come very soon, causing our family additional grief, but it will end the long, sad process of watching her deteriorate from a mentally and physically active woman to a person who merely exists.
News & Media
Expert writing Tips
Best practice
When using "deteriorate mentally", consider the specific aspect of mental function that is declining, such as memory, reasoning, or emotional regulation.
Common error
Avoid using "deteriorate mentally" as a catch-all phrase. Be specific about the cognitive or emotional functions that are declining to provide a clearer understanding of the situation.
Source & Trust
89%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "deteriorate mentally" functions as a verb phrase, describing a process of decline in mental capabilities. Examples in Ludwig show it used to describe the mental state of individuals facing various challenges, like Mrs. Astor and characters in literary works. Ludwig AI confirms its grammatical correctness.
Frequent in
News & Media
58%
Wiki
17%
Science
8%
Less common in
Encyclopedias
3%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "deteriorate mentally" describes a decline in cognitive functions or mental health, confirmed as grammatically correct by Ludwig. While uncommon, it appears across diverse contexts like News & Media, Wiki and Science, indicating a generally neutral register. For alternative expressions, one might consider "experience cognitive decline" or "suffer mental decline", being mindful to maintain clarity and specificity regarding the affected mental functions. Ludwig's analysis emphasizes the importance of precise language when discussing mental health.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
undergo mental deterioration
Uses a more formal and clinical tone to describe the process.
suffer mental decline
Highlights the suffering or negative impact of the mental deterioration.
become mentally impaired
Describes the resulting state of reduced mental function.
experience cognitive decline
Focuses specifically on cognitive abilities rather than overall mental state.
show signs of mental decline
Highlights observable indicators of declining mental health.
develop mental impairment
Highlights the development of a specific impairment or deficit.
decline in mental capacity
Emphasizes the reduction in one's mental abilities or faculties.
lose mental acuity
Focuses on the loss of sharpness and clarity in thinking.
see mental faculties diminish
Implies a gradual reduction in mental capabilities.
experience a worsening of mental state
Broader term including emotional/psychological factors besides cognitive.
FAQs
What does it mean to "deteriorate mentally"?
To "deteriorate mentally" means to experience a decline in cognitive functions, memory, or overall mental health over time. It implies a worsening of one's mental state.
What are some signs that someone might be "deteriorating mentally"?
Signs of someone "deteriorating mentally" can include memory loss, difficulty concentrating, changes in mood or personality, and impaired judgment. Consulting a healthcare professional is essential for proper diagnosis.
Which is a better phrase, "deteriorate mentally" or "decline mentally"?
Both "deteriorate mentally" and "decline mentally" are acceptable. "Deteriorate" suggests a more gradual and progressive worsening, while "decline" can be more general.
Are there ways to prevent or slow down mental deterioration?
While not all mental deterioration can be prevented, lifestyle factors such as regular exercise, a healthy diet, cognitive stimulation, and social engagement can help maintain cognitive function and slow down potential decline.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.1/5
Expert rating
Real-world application tested