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
in flaw
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "in flaw" is not correct and usable in written English.
It seems to be an incorrect combination of words, as "in flaw" does not convey a clear meaning or context. Example: "The design was criticized for being in flaw, leading to a redesign."
⚠ May contain grammatical issues
Science
News & Media
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
9 human-written examples
There's a beauty in flaw".
News & Media
This mechanism was the main responsible for the strengthening, what contrasts with the increase in flaw size.
Variations in flaw size increase the scatter in the strength more for low strain rate loadings and less clustered microstructures.
In this paper, we consider the role of friction in flaw tolerant adhesion between two dissimilar elastic solids.
The use of fracture mechanics concepts in flaw evaluations requires the quantification of the dependencies between flaw geometry, material characteristics, and load condition.
This increase in flaw size can be interpreted from the Weibull modulus, from 6 to 8 in those mixtures, with high deterioration of mechanical properties.
Human-verified similar examples from authoritative sources
Similar Expressions
51 human-written examples
The vetting process had at least one built-in flaw.
News & Media
But there's a built-in flaw: the mill uses a wire-mesh screen.
News & Media
It had the built-in flaw of lumping all sorts of things together: insult and injury, violence and awkwardness.
News & Media
The blueprint for becoming the most well-rounded swimmer in history turned out to have a built-in flaw.
News & Media
But the OBR's problematic relationship with the Treasury goes further: there is a built-in flaw in its forecasting tasks.
News & Media
Expert writing Tips
Best practice
Avoid using "in flaw" in formal writing. Opt for clearer and more grammatically sound alternatives like "at fault", "with a defect", or "flawed". Ensure the replacement accurately reflects your intended meaning.
Common error
A common mistake is to assume "in flaw" is a correct way to describe something containing an imperfection. It is not standard English and can confuse readers. Instead, use established phrases such as "with a flaw" or "flawed".
Source & Trust
82%
Authority and reliability
2.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "in flaw" functions as a prepositional phrase, but its usage is non-standard. Although Ludwig provides examples, the phrase doesn't conform to typical English grammatical patterns, making it generally incorrect.
Frequent in
Science
50%
News & Media
45%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
5%
Reference
0%
Ludwig's WRAP-UP
In summary, while "in flaw" may appear in some contexts, it is generally considered grammatically incorrect in standard English. As Ludwig AI points out, this phrase isn't a conventional combination of words. It is advisable to use alternatives like "with a flaw", "flawed", or "at fault" to ensure clarity and grammatical accuracy. The existing examples on Ludwig mainly come from scientific or news media sources, but this doesn't validate its widespread use or correctness. Therefore, it's best to steer clear of "in flaw" in formal writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
with a defect
Suggests the presence of a specific imperfection or fault.
with an imperfection
Highlights a slight flaw or blemish, often less severe than a defect.
at fault
Indicates responsibility for an error or problem.
containing errors
Emphasizes the presence of mistakes or inaccuracies.
showing defects
Focuses on the visible or apparent nature of flaws.
exhibiting flaws
Similar to "showing defects" but slightly more formal.
in error
Implies a state of being mistaken or incorrect.
with a shortcoming
Points to a deficiency or inadequacy.
with a weakness
Highlights a vulnerability or area of reduced strength.
marred by defects
Indicates that something is spoiled or damaged by imperfections.
FAQs
How can I correctly use a phrase to indicate something has a flaw?
What are some alternatives to "in flaw" that I can use in my writing?
Consider alternatives such as "with a defect", "imperfect", or "containing errors". The best choice depends on the nuance you want to convey. Is it a slight "imperfection", or a significant "defect"?
Is "in flaw" ever considered grammatically correct?
Generally, "in flaw" is not considered grammatically correct in standard English. There might be rare, highly specific technical or creative contexts where it could appear, but it's best to avoid it in most situations.
How does the meaning of "in flaw" differ from "with a flaw"?
"In flaw" is not a standard or recognized phrase. "With a flaw" is the correct and commonly used expression to indicate the presence of an imperfection or defect.
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
82%
Authority and reliability
2.1/5
Expert rating
Real-world application tested