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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 one of
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "principal one of" is not standard in written English. It may be used in contexts where you are identifying a primary example or key member of a group. For example: "He is the principal one of the committee responsible for the project." Alternative expressions include "main one of" and "primary one of."
News & Media
Science
Encyclopedias
Alternative expressions(20)
major one of
significant issue
primary concern
major concern
critical problem
important matter
pressing concern
serious challenge
vital consideration
key question
substantial matter
grave situation
significant theme
huge issue
momentous issue
significant error
significant election
significant research
significant connection
significant item
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
9 human-written examples
Peyote is well known for its hallucinogenic effects; the plant contains at least 28 alkaloids, the principal one of which is mescaline.
Encyclopedias
On the 30th of January, 1890, Charles W. Colehour brought a suit in equity (the principal one of the above cases) in the circuit court of Cook county, Ill., against Edward Roby and William H. Colehour.
Academia
If you need a non-host-based service principal (one of the form service/*), or if for some reason you cannot update NetDB, the principal must first be created in the wallet by a wallet administrator.
Academia
The investigation has revealed some characteristics of the response that are the result of both non-linearity and more than one degree of freedom, the principal one of these being saturation.
23, 25 As with all analyses of this type, there are limitations, the principal one of which is that the explanations for many of the differences observed are speculative and cannot be proven.
And the principal one of these is fear of change.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
51 human-written examples
Or maybe you can use the money to reduce the principal on one of your student loans.
News & Media
Mr. Tom is not a principal one would normally suspect of anxiety.
News & Media
The principal one describes the ordering of rigid rods using an orthorhombic cell.
Science
Ms. Green, an assistant school principal, said one of her main campaign themes would be opposition to the county's decision to overhaul its property tax system.
News & Media
One of the principal ones is the completion of the questionnaire in the classroom, in paper format, during some of the students' training sessions.
Science
Expert writing Tips
Best practice
Consider replacing "principal one of" with a more concise alternative such as "main" or "primary" for improved clarity and flow. This is particularly helpful in formal writing.
Common error
Avoid using "principal one of" in casual conversation or informal writing; simpler alternatives like "main" or "key" are generally more appropriate.
Source & Trust
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "principal one of" functions as a determiner phrase, specifying a particular element as the most important from a set. It is used to single out a primary item. Ludwig examples showcase its usage in diverse sentence structures.
Frequent in
News & Media
40%
Science
30%
Encyclopedias
10%
Less common in
Academia
10%
Formal & Business
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "principal one of" serves to highlight the most important element within a group. While grammatically sound, as indicated by Ludwig, it can sometimes sound verbose. Alternatives such as "main one of" or "primary one of" often offer greater clarity. The phrase is primarily found in news, scientific, and encyclopedic contexts. When using "principal one of", ensure it aligns with the level of formality required by your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
main one of
Replaces "principal" with "main", indicating primary importance.
primary one of
Substitutes "principal" with "primary", emphasizing fundamental importance.
leading one of
Uses "leading" instead of "principal", highlighting prominence or dominance.
key one of
Employs "key" to denote a crucial or essential element.
chief one of
Replaces "principal" with "chief", suggesting the most important or dominant.
foremost one of
Uses "foremost" to indicate being the most prominent or respected.
most important one of
Expands the phrase to explicitly state importance.
major one of
Substitutes "principal" with "major", emphasizing significance or scale.
central one of
Replaces "principal" with "central", highlighting a core or pivotal element.
prime one of
Uses "prime" to denote being the best or of highest quality.
FAQs
What does "principal one of" mean?
The phrase "principal one of" is used to identify the most important or leading item within a group or category. It emphasizes that the item is the primary or key element among others.
What can I say instead of "principal one of"?
You can use alternatives like "main one of", "primary one of", or "leading one of" depending on the specific context.
Is "principal one of" grammatically correct?
While grammatically acceptable, "principal one of" can sometimes sound verbose. Using simpler alternatives can improve clarity and conciseness.
How to use "principal one of" in a sentence?
Example: "The principal one of the factors contributing to the decline was lack of investment." Consider using alternatives like "The main factor..." for a more streamlined sentence.
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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
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested