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 prime reason for
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a prime reason for" is correct and usable in written English.
This phrase is used to introduce an explanation for a certain result. For example: The high unemployment rate in the city is a prime reason for the growing poverty.
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(20)
a main reason for
a key reason for
a major reason for
a primary reason for
a principal reason for
a leading cause of
a significant factor in
a crucial element of
the driving force behind
a first reason for
a chief reason for
a prime cause for
a prominent reason for
a prime justification for
a prime ground for
a top reason for
a prime motive for
a fundamental reason for
a crucial reason for
a compelling reason for
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
36 human-written examples
The company also cited soft rental car fleet sales as a prime reason for the drop.
News & Media
His willingness to collaborate, ignoring inter-party rivalries that are largely meaningless outside Westminster, is a prime reason for that.
News & Media
Indeed, executives cite fear of putting off overseas audiences as a prime reason for avoiding minority material.
News & Media
A prime reason for this failure is unresolved, often undetected, differences among stakeholders' sets of assumptions their "models"—of various aspects of the project.
Science
A prime reason for the attention to class size is that it represents such an extremely convenient policy instrument, one amenable to general political action.
Academia
The number and proximity to each other of animals, such as battery chickens, kept in sheds, is a prime reason for intensive farming needing antibiotics, he said.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
24 human-written examples
These oral bacterial colonies expel out a pungent gas as their excretory waste, the prime reason for a badly smelling mouth.
Wiki
Police union officials have long said that low pay is the prime reason for a recent exodus of officers.
News & Media
For me, the prime reason for pursuing an MBA was getting a career boost.
News & Media
Yet Ms. Cusack's Cleopatra is the prime reason for seeing a production due to reopen at London's Haymarket Theater in September.
News & Media
A survey released on September 11th by Sodexo, an education-outsourcing company, found that for more than half of them the prime reason for pursuing a degree was to improve job or salary prospects, or that they had to for their chosen profession.
News & Media
Expert writing Tips
Best practice
When using "a prime reason for", ensure that the reason you are presenting is indeed the most significant or influential factor in the situation. This strengthens your argument and provides clarity to your audience.
Common error
Avoid using "a prime reason for" when the reason is merely contributory and not the most significant. Overstating the importance can weaken your argument and mislead your audience.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a prime reason for" functions as a causal indicator, introducing the main cause or justification for a particular situation or outcome. Ludwig examples show it commonly precedes an explanation.
Frequent in
News & Media
48%
Science
21%
Academia
8%
Less common in
Formal & Business
6%
Encyclopedias
4%
Wiki
3%
Ludwig's WRAP-UP
In summary, "a prime reason for" is a versatile phrase used to introduce the most important cause or justification for a situation. Ludwig AI confirms its grammatical correctness and common usage across various domains, particularly in news, science, and academic writing. While alternatives like "a main reason for" or "a key reason for" exist, it's essential to ensure that the stated reason is indeed the most significant to maintain clarity and strengthen your argument. Therefore, use "a prime reason for" judiciously to convey the primary cause effectively.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a main reason for
Replaces "prime" with "main", indicating a key but not necessarily the most important reason.
a key reason for
Substitutes "prime" with "key", highlighting a significant and essential reason.
a major reason for
Uses "major" instead of "prime", suggesting a considerable and substantial reason.
a primary reason for
Employs "primary" in place of "prime", emphasizing the fundamental and initial reason.
a principal reason for
Replaces "prime" with "principal", underscoring the leading and foremost reason.
a leading cause of
Shifts from "reason" to "cause", specifying the origin or source of something.
a significant factor in
Changes from "reason" to "factor", indicating an element contributing to a result.
a crucial element of
Replaces "reason" with "element", suggesting an indispensable part of something.
the driving force behind
Modifies the structure to emphasize the impetus and motivation behind an action or event.
the main impetus for
Uses "impetus" instead of "reason", highlighting the initial force or stimulus.
FAQs
How can I use "a prime reason for" in a sentence?
Use "a prime reason for" to introduce the most important cause or justification for something. For example: "The company's bankruptcy was a prime reason for the city's economic decline."
What are some alternatives to "a prime reason for"?
You can use alternatives such as "a main reason for", "a key reason for", or "a major reason for" depending on the context.
Is there a difference between "a prime reason for" and "a reason for"?
"A prime reason for" emphasizes that the reason being presented is the most important one, whereas "a reason for" simply indicates one of potentially many reasons.
Can I use "the prime reason for" instead of "a prime reason for"?
Yes, "the prime reason for" can be used when referring to a single, definitive reason. "A prime reason for" is more appropriate when highlighting one significant reason among others.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested