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
a madman
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a madman" is correct and usable in written English.
It can be used to describe someone who is perceived as mentally unstable or irrational. Example: "The story revolves around a madman who believes he can control the weather with his mind."
✓ Grammatically correct
News & Media
Academia
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
60 human-written examples
A madman.
News & Media
He's a madman now".
News & Media
"He's not a madman.
News & Media
I'm like a madman!
Academia
He looks like a madman.
News & Media
He's a madman.
News & Media
He is a madman.
News & Media
He worked like a madman.
News & Media
LOS ANGELES — Aaron Axelrod is a madman.
News & Media
"Only a madman would call this creation!
News & Media
Does a madman enjoy his episodes?
News & Media
Expert writing Tips
Best practice
Use "a madman" when referring to someone whose actions are governed by irrationality, mental instability or extreme passion. Consider the specific context to determine if a more precise term (e.g., "psychopath", "maniac") might be more appropriate.
Common error
Avoid using "a madman" in professional or academic writing unless the situation genuinely warrants such a strong term. Opt for more nuanced language like "irrational actor", "unstable individual", or "person experiencing a mental health crisis" to maintain objectivity and avoid sensationalism.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a madman" functions primarily as a noun phrase, typically serving as a subject complement or object in a sentence. It is used to categorize or describe an individual deemed mentally unstable, irrational, or dangerous. Ludwig AI confirms its grammatical correctness and common usage.
Frequent in
News & Media
78%
Academia
12%
Wiki
3%
Less common in
Formal & Business
2%
Reference
2%
Science
1%
Ludwig's WRAP-UP
The phrase "a madman" is a common descriptor used to label someone exhibiting extreme irrationality or instability. As Ludwig AI confirms, it's grammatically correct and widely used. While versatile, its usage requires careful consideration due to its strong connotation. Analysis reveals its prevalent use in News & Media and Academia. When writing, consider alternatives like "unstable individual" in formal contexts to avoid sensationalism. Understand that the best alternative will depend on the context, such as "an insane person", "a lunatic", or "a deranged individual".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
an insane person
Focuses on the medical aspect of madness, implying a diagnosed mental illness.
a lunatic
An older term, suggesting madness influenced by the moon, now often used figuratively.
a deranged individual
Highlights the disordered state of mind and potential unpredictability.
a maniac
Emphasizes the frenzied and possibly violent nature of the individual's behavior.
a psychopath
Refers to a person with a personality disorder characterized by antisocial behavior and lack of empathy.
a disturbed person
Indicates a mental or emotional imbalance, possibly leading to erratic actions.
a crazed individual
Suggests a state of wild and uncontrolled excitement or agitation.
an eccentric
Describes someone with unconventional or slightly strange behavior.
an oddball
A more informal term for someone peculiar or strange.
a crackpot
Describes a person with unconventional, nonsensical, or impractical ideas.
FAQs
How can I use "a madman" in a sentence?
You can use "a madman" to describe someone acting irrationally or dangerously. For example, "The dictator was seen by many as "a madman", willing to risk everything for power."
What are some alternatives to "a madman"?
Depending on the specific context, you can use alternatives like "an insane person", "a lunatic", or "a deranged individual".
When is it appropriate to use the term "a madman"?
It's appropriate when describing someone whose behavior is extremely irrational, unpredictable, and potentially dangerous. However, consider the impact of your words and whether a more sensitive term might be more suitable in certain situations.
Is there a difference between "a madman" and "a maniac"?
While both terms suggest irrationality, "a madman" generally refers to someone with mental instability, while "a maniac" often implies frenzied or violent behavior.
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
4.5/5
Expert rating
Real-world application tested