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
deeply flawed
Grammar usage guide and real-world examplesUSAGE SUMMARY
"deeply flawed" is a correct and usable phrase in written English.
It is used to describe something that is fundamentally or significantly flawed. You can use it to express strong criticism or disappointment about something. Example: The government's policies on social welfare are deeply flawed and have led to widespread poverty and inequality among its citizens.
✓ Grammatically correct
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
59 human-written examples
It is deeply flawed.
News & Media
The SNP described them as "deeply flawed".
News & Media
The mind is a deeply flawed machine.
News & Media
Mr Aristide, they argue, was deeply flawed.
News & Media
But the plan is deeply flawed.
News & Media
But theirs was a deeply flawed organization.
News & Media
But Beecher's methodology was deeply flawed.
News & Media
Still, the deal was deeply flawed.
News & Media
Yet this week's report was deeply flawed.
News & Media
That rhetoric, however, is deeply flawed.
News & Media
Human beings are deeply flawed.
News & Media
Expert writing Tips
Best practice
Use "deeply flawed" to express a strong negative assessment, especially when something appears good on the surface but has significant underlying problems. For example, "The proposed solution is "deeply flawed" due to its reliance on outdated assumptions."
Common error
Avoid using "deeply flawed" for minor or superficial problems. The phrase is best reserved for situations where the flaws are fundamental and significantly undermine the value or effectiveness of something. A less intense phrase may be more appropriate for small mistakes.
Source & Trust
93%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "deeply flawed" functions primarily as an adjective phrase used to describe a noun. It serves to attribute a significant level of imperfection or deficiency to the subject. Ludwig AI confirms its proper usage and grammatical correctness.
Frequent in
News & Media
97%
Science
1%
Formal & Business
1%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "deeply flawed" is a common and grammatically sound expression used to convey that something has significant and fundamental imperfections. As Ludwig AI confirms, its primary function is to attribute a high degree of deficiency, often expressing strong disapproval or criticism. The phrase appears most frequently in News & Media sources, indicating its relevance in assessing and reporting on various issues. While versatile, it’s crucial to reserve "deeply flawed" for situations where the imperfections are substantial, avoiding overuse for trivial matters. Related phrases like "fundamentally unsound" or "seriously defective" offer similar meanings with slight variations in intensity. To ensure precision and impact, select the phrasing that aligns best with the specific nuance you aim to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Fundamentally unsound
Highlights a basic flaw in the foundation or structure.
Seriously defective
Emphasizes a significant operational or structural problem.
Grievously imperfect
Indicates a severe lack of perfection, with a touch of regret.
Critically deficient
Focuses on the absence of essential qualities or components.
Severely impaired
Suggests a significant reduction in functionality or quality.
Substantially impaired
Focuses on a considerable degree of damage or weakening.
Badly compromised
Implies that something has been weakened or damaged substantially.
Acutely deficient
Highlights a sharp or intense lack of something essential.
Significantly marred
Emphasizes that imperfections have negatively impacted the overall quality.
Profoundly inadequate
Emphasizes a deep or extreme lack of suitability or sufficiency.
FAQs
How can I use "deeply flawed" in a sentence?
You can use "deeply flawed" to describe something with significant and fundamental imperfections. For example, "The research methodology was "deeply flawed", leading to unreliable results."
What are some alternatives to saying "deeply flawed"?
Alternatives include "fundamentally unsound", "seriously defective", or "critically deficient" depending on the specific nuance you want to convey.
Is it appropriate to use "deeply flawed" in formal writing?
Yes, "deeply flawed" is appropriate for formal writing when you need to express a strong negative assessment. However, ensure your criticism is supported by evidence and analysis.
What makes something "deeply flawed" rather than just flawed?
The "deeply" emphasizes that the flaws are not superficial but rather fundamental and significantly impact the overall quality or effectiveness. It suggests that the issues are severe and not easily remedied.
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
93%
Authority and reliability
4.8/5
Expert rating
Real-world application tested