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
loss of reason
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "loss of reason" is correct and usable in written English.
It can be used to describe a state where someone is unable to think clearly or rationally, often due to extreme emotions or mental distress. Example: "In moments of great stress, one might experience a loss of reason, leading to impulsive decisions."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Wiki
Alternative expressions(3)
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
Talk about a loss of dominance in science -- how about a loss of reason?
News & Media
She approvingly describes a Schumann piece as embodying the loss of reason.
News & Media
He added: "Even when the blood boils, we must not allow such loss of reason and such loss of control".
News & Media
"It's an insult to our intelligence and common sense and is exactly that loss of reason and scientific understanding that they promised they wouldn't lose when we left.
News & Media
Even within marriage, sex is morally troubling because it involves "a loss of reason," but this is compensated by the goods of marriage (Summa Theologiae, unfinished at Aquinas' death, II-II, 153, 2; 154, 2).
Science
This I can & do endure as becomes a man it was the horrible never-ending oscillation between hope & despair which I could not longer have endured without the total loss of reason".
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
But Nick Spencer, research director of the Christian thinktank Theos, is the kind of intelligent, thoughtful, sympathetic critic that atheists need, if only to remind them that belief in God does not necessarily require a loss of all reason.
News & Media
It is a loss of collective reason.
News & Media
Gas chambers, atomic bombs, the death of God, the pressure to succeed, the threat of totalitarianism, the loss of faith in reason (May's candidate) — you name it.
News & Media
Mortality status is unknown in the database, unless a patient died in the hospital and the loss of follow-up reason is unclear due to death, job changes, or job loss, etc.
Science
(e) In addition to any other civil remedy available, a person who suffers damage or loss by reason of a violation of subdivision (a) may bring a civil action against the violator for compensatory damages and injunctive relief or other equitable relief pursuant to paragraphs (1), (2), (4), and (5) of subdivision (e) and subdivision (g) of Section 502.
News & Media
Expert writing Tips
Best practice
Use "loss of reason" to describe situations where emotions or extreme circumstances override logical thinking. Ensure the context clearly indicates the shift from rationality to irrationality.
Common error
Avoid using "loss of reason" in highly formal or technical writing where more precise terms like "cognitive impairment" or "irrationality" might be more appropriate.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "loss of reason" primarily functions as a noun phrase, often serving as the object of a verb or preposition. Ludwig AI confirms it describes a state or condition where rational thought is diminished or absent. The phrase refers to an impaired ability to think logically and coherently.
Frequent in
News & Media
40%
Science
35%
Encyclopedias
10%
Less common in
Wiki
10%
Formal & Business
5%
Reference
0%
Ludwig's WRAP-UP
In summary, "loss of reason" is a grammatically sound phrase used to depict a state where logical thinking is compromised by emotions or extreme circumstances. Ludwig AI's analysis of diverse sources reveals its usage across news, science, and philosophical domains, suggesting a neutral to formal register. While "loss of reason" effectively conveys impaired judgment, consider alternatives like "erosion of rationality" or "breakdown of logic" for nuanced contexts. To ensure clarity, avoid overuse in technical writing and clearly establish the context of irrationality.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
erosion of rationality
Focuses on the gradual decline in rational thinking, rather than a sudden absence.
breakdown of logic
Emphasizes the failure of logical processes.
collapse of judgment
Highlights the failure in making sound decisions.
waning of rationality
Suggests a gradual decrease in rational thought over time.
impairment of reasoning
Focuses on the functional aspect of reasoning being weakened.
decline in sense
Refers to a reduction in the ability to perceive and understand things clearly.
eclipse of sanity
Emphasizes a temporary obscuring of mental stability.
derangement of mind
Indicates a disturbance or disorder in mental faculties.
mental aberration
Highlights a deviation from the normal or typical mental state.
cognitive dissonance
Describes the mental discomfort experienced when holding conflicting beliefs.
FAQs
How can I effectively use "loss of reason" in a sentence?
Employ "loss of reason" to depict moments where rational thought is overshadowed by intense emotions or extreme situations. For example, "The character experienced a "loss of reason" due to the overwhelming grief."
What phrases can I substitute for "loss of reason"?
Consider using alternatives like "erosion of rationality", "breakdown of logic", or "collapse of judgment" depending on the specific nuance you want to convey.
Is it correct to say "a loss of reason" or simply "loss of reason"?
Both forms are acceptable. The inclusion of "a" depends on the specific context and whether you're referring to a specific instance or the general concept of "loss of reason".
How does "loss of reason" differ from "insanity"?
"Loss of reason" generally refers to a temporary or situational lapse in rational thinking, while "insanity" implies a more prolonged and severe mental disorder. "Loss of reason" is a broader term that can encompass various degrees of impaired judgment.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested