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
core issue
Grammar usage guide and real-world examplesUSAGE SUMMARY
'core issue' is a correct and usable phrase in written English.
You can use it to describe an essential or fundamental problem or difficulty. For example, "The core issue of the argument is whether or not to raise taxes."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
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
What's the core issue?
News & Media
"That is the core issue".
News & Media
That's the core issue here".
News & Media
This is the core issue.
News & Media
"Kashmir is the core issue".
News & Media
Culture is the core issue.
News & Media
And it would skirt the core issue.
News & Media
"The core issue will be terrorism".
News & Media
He added, "This is the core issue.
News & Media
"That is not the core issue here.
News & Media
"And it's not the core issue".
News & Media
Expert writing Tips
Best practice
When using "core issue", ensure that you clearly define what that issue is to avoid ambiguity. Provide context or supporting information to clarify its importance.
Common error
Avoid labeling something as the "core issue" if it's only one of several significant factors. Overstating its importance can undermine your argument if other issues are equally or more relevant.
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "core issue" functions as a noun phrase that identifies the central or most important problem in a given context. Ludwig AI confirms its correct and widespread use across various domains, as seen in the provided examples.
Frequent in
News & Media
51%
Science
23%
Formal & Business
8%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "core issue" is a grammatically sound and frequently used expression to denote the most essential problem or point in a given context. As affirmed by Ludwig AI, its versatility makes it suitable for various settings, ranging from news and media to scientific and business environments. While alternatives such as "central question" or "key problem" exist, it's important to use "core issue" precisely, ensuring that the issue identified is, in fact, the most central to the matter at hand. Avoiding overstatement and providing clear context are key to its effective usage.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
crux of the issue
Highlights the most decisive or critical point.
heart of the matter
Points to the most important or essential aspect of something.
main concern
Highlights the primary source of worry or anxiety.
key problem
Emphasizes the most significant obstacle or challenge.
critical point
Underscores the essential element that must be considered.
central question
Focuses on the question that needs to be answered to resolve a situation.
fundamental question
Stresses the basic or foundational inquiry at stake.
underlying problem
Draws attention to a less obvious but crucial issue.
central theme
Highlights the unifying idea.
root cause
Emphasizes the origin or fundamental reason for a problem.
FAQs
How do I use "core issue" in a sentence?
Use "core issue" to identify the most important problem or central point in a discussion or situation. For example, "The "core issue" in the negotiation is the distribution of resources".
What can I say instead of "core issue"?
You can use alternatives like "central question", "main concern", or "key problem" depending on the specific context.
Which is correct: "core issue" or "main issue"?
Both "core issue" and "main issue" are correct and often interchangeable. However, "core issue" implies a more fundamental or essential problem, while "main issue" simply refers to the primary issue being discussed.
What's the difference between "core issue" and "underlying problem"?
"Core issue" refers to the most central or important problem. "Underlying problem" refers to a less visible issue that causes or contributes to other problems.
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
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested