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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
the core reason
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "the core reason" is correct and usable in written English.
It can be used to refer to the fundamental or primary cause of a situation or issue. Example: "The core reason for the project's failure was a lack of adequate funding."
✓ Grammatically correct
News & Media
Academia
Science
Formal & Business
Alternative expressions(20)
the main reason
the primary cause
the primary reason
the principal cause
the underlying cause
the key factor
the fundamental basis
the essential element
the root cause
the ultimate explanation
the core essence
the core virtue
the core ground
the core cause
the core reasoning
the core raison
the core rationale
the core intelligence
the core basis
the core reasons
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
Chinese expansion was the core reason for the deciduous drive.
News & Media
But the core reason is no doubt emotional and very human.
News & Media
The core reason for students disengaging is that they are frustrated.
News & Media
The core reason seemed to be that Petty was different, not enough of his dad's idea of an American boy.
News & Media
When an actor has an idea, it's very important to get to the core reason behind it.
News & Media
"We need to address what is the core reason why people with a disability suffer disproportionate abuse, neglect and violence.
News & Media
"That is really the core reason that people are upgrading their skills and making sure they are globally competitive".
News & Media
When we get to the core reason of why we are doing something, we often decide to change our approach.
News & Media
They don't do it because the place is so corrupt but also, and this is the core reason, because of this "anti-imperialist" stand they take.
News & Media
I feel that way too, but what do you think is the core reason why it is so destabilizing or frightening to people?
News & Media
The core reason libraries exist is to build collections, to make those collections accessible, to assist patrons in using our collections, and to preserve our collections forever.
Academia
Expert writing Tips
Best practice
When using "the core reason", ensure it is followed by a clear and specific explanation to avoid ambiguity. For instance, instead of just saying "the core reason was obvious", specify the reason.
Common error
Avoid using "the core reason" when other contributing factors exist. Acknowledge complexity where appropriate by using phrases like "a significant factor" or "one of the main reasons" instead.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "the core reason" functions as a noun phrase, typically acting as the subject complement or object of a preposition. It pinpoints the primary explanation for a situation. According to Ludwig, the phrase is grammatically correct and usable in written English.
Frequent in
News & Media
58%
Academia
16%
Science
13%
Less common in
Formal & Business
11%
Wiki
1%
Reference
1%
Ludwig's WRAP-UP
In summary, "the core reason" is a grammatically sound and frequently used phrase that serves to underscore the primary cause or justification behind a situation. Ludwig confirms its correctness and usability, noting its presence in diverse contexts. The phrase is most common in news and media, reflecting its value in explaining events and decisions. While alternatives like "the main reason" or "the primary cause" exist, "the core reason" often conveys a sense of deeper or more fundamental explanation. When using the phrase, it's best to provide a clear and specific explanation to avoid any ambiguity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
the primary reason
Emphasizes the element of being first in importance or rank.
the main reason
Highlights the most important reason among others.
the principal cause
Focuses on the initial or primary cause.
the underlying cause
Suggests a less obvious but fundamental reason.
the key factor
Identifies a crucial element contributing to an outcome.
the fundamental basis
Indicates the essential foundation or reason.
the central motive
Highlights the driving force or intention.
the essential element
Focuses on the indispensable component.
the root cause
Highlights the origin of the problem or situation.
the ultimate explanation
Suggests the final or most complete reason.
FAQs
How can I use "the core reason" in a sentence?
You can use "the core reason" to introduce the most important cause or explanation for a particular situation. For example: "The core reason for the company's success was its innovative product design".
What are some alternatives to "the core reason"?
You can use alternatives like "the primary reason", "the main reason", or "the principal cause" depending on the context.
Is it correct to say "the core reason is because"?
While commonly used, some consider the phrase "the core reason is because" to be redundant. It's often better to simply say "the core reason is" or "the reason is because" to avoid repetition.
What's the difference between "the core reason" and "the main reason"?
Both "the core reason" and "the main reason" indicate a significant cause, but "the core reason" may imply a more fundamental or essential factor, while "the main reason" simply points to the most important among several reasons.
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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