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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
plays a key role
Grammar usage guide and real-world examplesUSAGE SUMMARY
"plays a key role" is correct and usable in written English.
You can use it to refer to something that is crucial or essential to a particular process, goal, or task. For example: "The human resources team plays a key role in resolving employee disputes."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(20)
instrumental
essential for
critical to
major factor
vital for
fundamental to
is vital for
is critical to
is essential for
is crucial in
is central to
is fundamental to
is instrumental
is paramount
is a major factor
is significant in
plays a fundamental role
plays a pivotal role
plays a crucial role
plays a essential role
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
"Everybody plays a key role.
News & Media
The refrigerator plays a key role.
News & Media
It plays a key role in causing the disease.
News & Media
In some work, sound plays a key role.
News & Media
Queensland plays a key role in every federal election.
News & Media
Energy plays a key role in chemical processes.
Encyclopedias
In all this, credit plays a key role.
News & Media
Canada plays a key role for Salesforce in its business.
News & Media
Usually time delay plays a key role in many systems.
Reservoir fluid composition plays a key role in properties' calculations.
Convexity plays a key role in optimization theory.
Expert writing Tips
Best practice
When using "plays a key role", ensure that the context clearly identifies what is being influenced or affected. Providing specific details strengthens the statement's impact.
Common error
Avoid using "plays a key role" when the element's contribution is minor or secondary. Overusing the phrase dilutes its impact and can make your writing sound hyperbolic.
Source & Trust
83%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "plays a key role" functions as a predicate in a sentence, emphasizing the significance or importance of a subject. It indicates that the subject has a crucial influence or effect on a particular process, outcome, or situation. According to Ludwig AI, the expression is valid.
Frequent in
Science
49%
News & Media
36%
Encyclopedias
2%
Less common in
Formal & Business
1%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
The phrase "plays a key role" is a common and grammatically correct way to emphasize the importance of something. Ludwig AI confirms its validity. It's widely used in various contexts, especially in scientific and news-related content, to highlight essential elements. While versatile, it's important to use it judiciously to avoid diluting its impact. Synonyms like "is "instrumental"" or "is "crucial in"" can add nuance depending on the context. Using this phrase effectively enhances clarity and strengthens the emphasis on the subject's significance.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is vital for
Stresses the necessity of something for the survival, success, or proper functioning of something else.
is critical to
Indicates the crucial importance of something, suggesting that its absence would lead to failure.
is essential for
Highlights the indispensable nature of something, suggesting that it's absolutely necessary.
is crucial in
Highlights that something is extremely important or necessary, especially in deciding the success or failure of something.
is central to
Emphasizes the importance of something as a focal point around which other elements revolve.
is fundamental to
Underlines the foundational aspect of something, emphasizing its role as a basic element.
is instrumental
Focuses on the essential nature of the contribution, emphasizing its direct impact on achieving a desired outcome.
is paramount
Elevates the importance of something above all else, signifying its supreme significance.
is a major factor
Highlights the significant influence of something without necessarily implying it's the most important element.
is significant in
Indicates that something has considerable importance or effect, without necessarily being decisive.
FAQs
How can I use "plays a key role" in a sentence?
Use "plays a key role" to emphasize the importance of something in achieving a specific outcome. For example, "Teamwork "plays a key role" in project success."
What's a more formal way to say "plays a key role"?
In formal writing, you can use alternatives like "is "instrumental"", "is "essential for"", or "is "critical to"" to convey a similar meaning with a more sophisticated tone.
What are some synonyms for "plays a key role"?
Synonyms include "is a "major factor"", "is "vital for"", and "is "fundamental to"". The best choice depends on the specific nuance you want to convey.
Is it okay to use "plays a key role" in academic writing?
Yes, "plays a key role" is appropriate for academic writing. It's a clear and concise way to highlight the importance of a particular element or factor. Be sure to provide evidence to support your claim.
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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
4.6/5
Expert rating
Real-world application tested