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
logical fallacy
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'logical fallacy' is correct and usable in written English.
You can use it when you want to refer to an argument or statement which appears valid but is in fact incorrect. For example, "The politician's argument that raising taxes would lead to increased economic growth was a logical fallacy".
✓ Grammatically correct
News & Media
Academia
Science
Alternative expressions(20)
flawed argument
invalid argument
unsound reasoning
specious reasoning
faulty logic
logical reasoning
logical error
inherent disconnect
inherent inconsistency
internal contradiction
tangled justifications
muddled reasoning
flawed reasoning
a bit of a leap of
that is plain logic
dunning kruger effect
cognitive bias
confirmation bias
conscious bias
cognitive biases
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
That is a logical fallacy.
The whole thing is a logical fallacy.
News & Media
That's called circular reasoning and it's a logical fallacy.
News & Media
This involves explaining the logical fallacy underpinning a myth.
News & Media
Free college sounds great, but it is a logical fallacy.
The belief that the connection between two events causes an outcome is a logical fallacy.
News & Media
Reside said this attempt at mitigation rested on "an absolute logical fallacy".
News & Media
It's a logical fallacy, but whoever said dating had to make sense?
News & Media
It sounded like a logical fallacy, but it seemed pleasantly futuristic nonetheless.
News & Media
(And then there's the logical fallacy most inherent to storytelling: the misleading application of anecdotal evidence).
News & Media
If anything, it's a pointing indictment of the logical fallacy in our society's way of thinking".
News & Media
Expert writing Tips
Best practice
When identifying a "logical fallacy", be specific about the type of fallacy (e.g., ad hominem, straw man) to strengthen your critique and demonstrate a clear understanding of the error in reasoning.
Common error
Avoid casually labeling any disagreement as a "logical fallacy". Ensure you can clearly articulate why the reasoning is flawed and which specific fallacy is being committed. Misuse dilutes the term's impact.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "logical fallacy" functions as a noun phrase that identifies a specific type of error in reasoning or argumentation. It is used to label a flawed pattern of thought rather than describing an action or state. As confirmed by Ludwig AI, it's a standard English phrase.
Frequent in
News & Media
42%
Academia
25%
Science
23%
Less common in
Formal & Business
3%
Wiki
3%
Encyclopedias
1%
Ludwig's WRAP-UP
The phrase "logical fallacy" is a noun phrase used to identify errors in reasoning, commonly found in academic, news, and scientific contexts. Ludwig AI confirms that the phrase is grammatically sound and widely used. Its purpose is to critique arguments and highlight flawed logic. When using the term, specify the fallacy type to strengthen your critique. Common alternatives include "fallacy in reasoning" and "flawed argument". Avoid overusing the term without proper justification. Being able to identify and articulate logical fallacies allows for more critical and informed discussions. Major sources using it are The New York Times, The Guardian, and The Washington Post.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
fallacy in reasoning
Focuses on the presence of a flaw within the reasoning process itself.
flawed argument
Highlights that the overall argument is weak due to errors in its construction.
reasoning error
Emphasizes the mistake made during the reasoning or inference process.
invalid argument
Indicates that the argument's conclusion does not follow from its premises.
unsound reasoning
Stresses the lack of solid basis or validity in the reasoning employed.
erroneous deduction
Highlights an incorrect conclusion reached through deductive reasoning.
specious reasoning
Suggests the reasoning appears correct but is actually deceptive or misleading.
faulty logic
Identifies a defect or imperfection in the logical structure of an argument.
deceptive argument
Emphasizes the intent to mislead or deceive through the use of flawed reasoning.
argumentative flaw
Focuses on the specific imperfection or defect within the argumentative structure.
FAQs
How can I identify a "logical fallacy" in an argument?
Look for common patterns of flawed reasoning, such as appeals to emotion, attacks on the person making the argument (ad hominem), or misrepresentations of the opponent's position (straw man). Understanding these patterns will help you spot fallacies more easily.
What are some common types of "logical fallacies"?
Common types include the ad hominem fallacy, the straw man fallacy, the appeal to authority fallacy, the false dilemma fallacy, and the bandwagon fallacy. Learning about these will sharpen your critical thinking skills.
How can I avoid committing a "logical fallacy" in my own arguments?
Carefully examine your premises, ensure your conclusions follow logically from your premises, and avoid making unsupported claims. Also, be open to feedback and willing to revise your arguments if flaws are pointed out.
What's the difference between a "logical fallacy" and a factual error?
A "logical fallacy" is a flaw in the reasoning process, while a factual error is an inaccuracy in the information presented. An argument can be logically valid but based on false premises, or factually correct but logically unsound.
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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested