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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 principal purpose
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "the principal purpose" is correct and usable in written English.
It can be used to indicate the main reason or objective behind an action or decision. Example: "The principal purpose of this meeting is to discuss the upcoming project deadlines."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
59 human-written examples
The principal purpose of a mammogram is not simply to prevent death.
News & Media
The principal purpose of the League is to award & record the master points earned by its sixty-thousand members.
News & Media
"The principal purpose of trademark law is first to protect consumers and then to protect brand owners," he added.
News & Media
"The principal purpose and the necessary effect of this law are to demean those persons who are in a lawful same-sex marriage".
News & Media
House Republicans said the principal purpose of tax-cut legislation was to stimulate economic growth, not to provide checks for families who do not pay income tax.
News & Media
(It would also be smoother to move the "that" in this sentence, so it reads, "She said the jury had been told that the principal purpose ") 8.
News & Media
The principal purpose of combat art of course is propaganda, with posters a particularly effective way to convey a simple message to a largely illiterate population.
News & Media
Dr. Venter said that the principal purpose of his paper was to describe the sequence and that he would convene conferences of experts to help further interpret it.
News & Media
Corner furniture, movable articles, principally cupboards, cabinets, shelves, and chairs, designed to fit into the corner of a room, for the principal purpose of saving space.
Encyclopedias
"The principal purpose of these types of investments isn't the appreciation of capital, though we hope to get a return," Ms. Rodgers said.
News & Media
"We've been saying for years that the principal purpose of many Congressional Web sites is just to promote members of Congress," said Gary Ruskin, the director of the nonpartisan Congressional Accountability Project.
News & Media
Expert writing Tips
Best practice
Use "the principal purpose" to clearly and directly state the most important reason or objective behind an action, decision, or project. This ensures clarity and avoids ambiguity.
Common error
Avoid using "principle" (a fundamental truth or proposition) when you mean "principal" (main or most important). "The principal purpose" refers to the main objective, not a guiding principle.
Source & Trust
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "the principal purpose" functions as a noun phrase that often acts as a subject complement or object of a preposition. It identifies the main objective, intention, or reason behind an action, event, or entity. Ludwig AI indicates that this phrase is correct and commonly used.
Frequent in
News & Media
39%
Science
38%
Encyclopedias
6%
Less common in
Formal & Business
4%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "the principal purpose" is a grammatically correct and frequently used phrase that serves to highlight the main reason or objective behind something. According to Ludwig AI, the phrase is valid and can be used in written English. As evidenced by the numerous examples, it's commonly found in news, science, and encyclopedic contexts. Writers should ensure they are using "principal" and not confusing it with "principle". Alternatives such as "the main aim" or "the primary goal" can be used to express similar meanings. Using this phrase effectively ensures clarity and focus in communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
the main aim
Focuses on the primary goal or intention.
the chief objective
Emphasizes the primary target or desired outcome.
the primary goal
Highlights the foremost aim to be achieved.
the key intention
Stresses the main underlying motive or plan.
the central objective
Indicates the main aim around which everything else revolves.
the overriding concern
Suggests the most important matter needing attention.
the ultimate reason
Emphasizes the final or fundamental cause.
the fundamental reason
Highlights the basic or essential cause.
the primary motivation
Focuses on the main driving force behind an action.
the core driver
Emphasizes the central factor propelling something forward.
FAQs
What does "the principal purpose" mean?
The phrase "the principal purpose" refers to the main or most important reason or objective for something. It signifies the primary goal or intention behind an action, decision, or design.
How can I use "the principal purpose" in a sentence?
You can use "the principal purpose" to clearly state the main reason for something. For example, "The principal purpose of this study is to investigate the effects of climate change on biodiversity."
What are some alternatives to "the principal purpose"?
Alternatives to "the principal purpose" include "the main aim", "the chief objective", or "the primary goal". These phrases all convey the idea of the most important reason or objective.
When should I use "the principal purpose" instead of "a secondary goal"?
Use "the principal purpose" when you want to emphasize the primary objective, while "a secondary goal" refers to a less important or subordinate aim. The principal purpose is the driving force, while a secondary goal is an additional benefit or outcome.
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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
4.6/5
Expert rating
Real-world application tested