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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
principal issue
Grammar usage guide and real-world examplesUSAGE SUMMARY
"principal issue" is a correct and commonly used phrase in written English.
It refers to the main or most important problem or concern in a particular situation. This phrase is often used in formal or academic writing, but can also be used in everyday language. Example: The principal issue in the debate over climate change is the urgent need for action to reduce carbon emissions.
✓ Grammatically correct
News & Media
Encyclopedias
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
58 human-written examples
This is the principal issue".
News & Media
The principal issue is with Richard Cathar himself.
News & Media
But the principal issue is nostalgic craft, made chic, smart and demonic.
News & Media
The principal issue is how can we design better, more humane buildings.
News & Media
The principal issue with nuclear power, and other energy sources, is cost.
News & Media
The principal issue, legal experts say, will be how regulators define the server market.
News & Media
A principal issue at the hearings will be Mr. Ashcroft's record on race issues and other civil rights matters.
News & Media
"A lot of the focus has been on the pipeline, but for me retention is the principal issue".
News & Media
Their diffident use of the d-word, the principal issue that dogged post-Good Friday agreement politics, was telling.
News & Media
The principal issue was that the Medal Factory story was not a straightforward tale of sporting rags to riches.
News & Media
Cuba will probably be the principal issue in American politics between now & the next election, because there is so little else with which to catch the public's ear.
News & Media
Expert writing Tips
Best practice
Use "principal issue" to introduce the core subject of a discussion or argument. This helps to focus the reader's attention immediately.
Common error
A common mistake is using "principle" instead of "principal". "Principal" refers to the most important item, while "principle" refers to a fundamental truth or proposition.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "principal issue" functions as a noun phrase, typically serving as the subject or object of a sentence. It identifies the most important problem or point of discussion. As Ludwig highlights, it's a commonly used and correct phrase.
Frequent in
News & Media
40%
Science
25%
Encyclopedias
15%
Less common in
Formal & Business
10%
Wiki
5%
Reference
5%
Ludwig's WRAP-UP
The phrase "principal issue" is a grammatically sound and frequently used expression to pinpoint the most significant problem or point of discussion. As Ludwig confirms, its usage spans across diverse fields, including news, science, and encyclopedic references. It is vital to differentiate "principal" from "principle" to prevent errors, and to make sure the usage effectively conveys the foremost issue, as substituting it with phrases such as "main concern", "central problem", or "key question" can slightly shift the meaning.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
main concern
Focuses on the feeling of worry or interest instead of a formal problem.
central problem
Highlights the problematic aspect as being the most important.
key question
Emphasizes the inquiry aspect of the issue.
primary focus
Stresses the point of concentration or attention.
major challenge
Highlights the difficulty aspect of the issue.
core element
Indicates a fundamental component of a situation.
chief difficulty
Underlines the most significant obstacle or problem.
critical aspect
Highlights the importance of a particular element.
fundamental matter
Emphasizes the basic or essential nature of the subject.
overriding factor
Indicates a prevailing influence or consideration.
FAQs
How to use "principal issue" in a sentence?
The "principal issue" is typically followed by a clause that explains what the main problem or concern is. For example, "The "principal issue" is whether the budget cuts will affect essential services."
What can I say instead of "principal issue"?
You can use alternatives like "main concern", "central problem", or "key question" depending on the context.
Which is correct, "principal issue" or "principle issue"?
"Principal issue" is correct. "Principal" means main or most important, while "principle" refers to a basic truth or law.
What's the difference between "principal issue" and "primary issue"?
While similar, "principal issue" often implies a higher degree of importance or centrality than "primary issue". "Principal" suggests it is the foremost issue among all 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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested