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
seriously defective
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "seriously defective" is correct and usable in written English.
It can be used to describe something that has significant flaws or issues, often in a formal or technical context. Example: "The product was deemed seriously defective, leading to a recall and further investigation into its manufacturing process."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
18 human-written examples
In rare (and brief) instances, justified by overwhelming historical interest, Mr. Scarduelli includes material from a seriously defective source.
News & Media
Any list of the Supreme Court's enduring power grabs that does not begin with Bush v. Gore is seriously defective.
News & Media
Unfortunately, the only English translation of The Second Sex, done in 1953 by the zoologist HM Parshley, is seriously defective.
News & Media
The Vatican directive is also seriously defective for playing down the role of civilian boards in investigating abuses.
News & Media
"When you have a car that has so many safety recalls that it might fall within lemon laws, you have a seriously defective vehicle," he said.
News & Media
Doctors and hospitals around the developed world preside over a seriously defective system of medical-care delivery, which will need comprehensive re-engineering.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
40 human-written examples
The Nazi emphasis on proper breeding, racial purity, and weeding out defectives come from taking Darwin's theory seriously and applying it at the level of society.
News & Media
Both autophagy and endocytosis are seriously impaired and defective endolysosomes accumulate upon loss of Atg6.
Motherboard spoke with service member who were critically injured when their guns blew up in their hands, and tracked down the internal emails and reports that show that Pentagon officials did not take seriously the threats posed by defective arms. .
News & Media
Radioactive tritium and strontium leaks; defective emergency sirens; control rod malfunctions; defective fireproofing; seriously flawed emergency sump pumps; back-up cooling pumps impaired by nitrogen leaks; worn wiring; failing emergency generators; failing emergency communications systems and on and on and on it goes.
News & Media
Taken together, aberrant expression of these genes may seriously damage iron metabolism, iron supply for heme biosynthesis, and hemoglobin biosynthesis during late erythroid differentiation, finally resulting in defective hematopoiesis in zebrafish embryo.
Science
Expert writing Tips
Best practice
When describing product recalls or legal issues, use "seriously defective" to underscore the severity of the flaw and its potential consequences.
Common error
Avoid using "seriously defective" in casual conversation. Opt for simpler terms like "really bad" or "broken" to maintain a natural tone.
Source & Trust
93%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "seriously defective" functions as a compound adjective modifying a noun. It intensifies the degree to which something is flawed or faulty. Ludwig AI's analysis confirms its use in describing significant imperfections.
Frequent in
News & Media
60%
Science
20%
Formal & Business
10%
Less common in
Encyclopedias
3%
Reference
3%
Wiki
1%
Ludwig's WRAP-UP
The phrase "seriously defective" is a compound adjective used to describe something with significant flaws or faults. As highlighted by Ludwig AI, it is grammatically correct and commonly used, particularly in formal contexts such as news reports, scientific articles, and business documents. The phrase serves to emphasize the severity of a defect, indicating that the issue is not minor. While alternatives like "severely flawed" or "critically faulty" exist, "seriously defective" provides a clear and direct way to communicate the gravity of a situation.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
severely flawed
Emphasizes the presence of significant imperfections or faults.
critically faulty
Highlights the crucial nature of the defect and its potential impact.
gravely impaired
Implies a serious reduction in functionality or effectiveness.
substantially compromised
Focuses on the significant degree to which something has been weakened or damaged.
majorly deficient
Indicates a large-scale lack or inadequacy.
badly malfunctioning
Highlights the severe operational problems or failures.
significantly impaired
Stresses the considerable impact on capability or function.
acutely non-functional
Emphasizes a sharp or critical absence of functionality.
fundamentally unsound
Suggests the presence of deep-seated or structural problems.
hopelessly inadequate
Indicates that something is completely insufficient or unsuitable.
FAQs
How can I use "seriously defective" in a sentence?
You can use "seriously defective" to describe items or systems with significant flaws. For example, "The car was deemed "seriously defective" after multiple safety recalls."
What are some alternatives to "seriously defective"?
Alternatives include "severely flawed", "critically faulty", or "gravely impaired". The best choice depends on the specific context.
Which is more appropriate: "seriously defective" or "slightly defective"?
"Seriously defective" implies a major problem, while "slightly defective" suggests a minor issue. Choose the phrase that accurately reflects the severity of the defect.
Is "seriously defective" a formal phrase?
Yes, "seriously defective" is generally considered a formal phrase suitable for professional or technical contexts. In casual conversation, less formal alternatives might be preferred.
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
4.5/5
Expert rating
Real-world application tested