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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
are key for
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are key for" is correct and usable in written English.
It can be used to indicate that something is essential or crucial for a particular purpose or outcome. Example: "Effective communication skills are key for successful teamwork in any organization."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(17)
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
Those two things are key for us".
News & Media
"Home games are key for us," he concluded.
News & Media
3. Cropped jackets are key for spring, Langenstein says.
News & Media
Earlier diagnosis and earlier treatment are key for this to happen.
News & Media
Outside the pack, the half-back pairing of Ormaechea and Berchesi are key for Uruguay.
News & Media
Measuring and monitoring are key for public relations and investor relations professionals.
News & Media
A well-played drive and second shot are key for birdie.
News & Media
Sex education and non-judgmental communication are key for preventing unplanned pregnancies.
News & Media
As the editor, Ben Little, observes: "Social networks are key for our generation, but they won't save us from disengagement.
News & Media
"African political will and determination are key for the continent to be able to realise this massive undertaking.
News & Media
Community-based healthcare Human resources are key for the successful integration of sustainable programmes into local health services.
News & Media
Expert writing Tips
Best practice
When using "are key for", ensure that the subject clearly indicates the elements that are crucial. This enhances clarity and prevents ambiguity in your writing.
Common error
Avoid using "are key for" excessively in a single piece of writing. Variety in expression maintains reader engagement and prevents your writing from sounding repetitive. Consider alternative phrases like "are crucial for" or "are essential for" to diversify your language.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are key for" serves as a predicate adjective, emphasizing the essential or crucial nature of the subject in relation to achieving a particular goal or outcome. Ludwig examples indicate that this phrase is used to highlight indispensable elements across various contexts.
Frequent in
Science
35%
News & Media
35%
Formal & Business
10%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "are key for" is a versatile and common expression used to emphasize the essential nature of certain elements for achieving a specific outcome. As affirmed by Ludwig, it is grammatically correct and suitable for diverse contexts, ranging from scientific literature to news articles. While highly useful, it's important to avoid overuse and consider related phrases like "are crucial for" or "are essential for" to maintain writing variety. In summary, "are key for" effectively highlights indispensable factors, enhancing the clarity and impact of your message.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
are crucial for
Emphasizes the critical importance of something.
are critical for
Highlights the decisive importance of something.
are essential for
Highlights the necessity of something.
are vital for
Stresses the indispensability of something.
are fundamental for
Indicates the basic or foundational importance.
are indispensable for
Emphasizes the impossibility of doing without something.
are paramount for
Suggests the supreme importance of something.
are necessary for
Simply states the need for something.
are integral to
Indicates that something is an essential part of a whole.
are requisite for
Highlights that something is required or obligatory.
FAQs
How can I use "are key for" in a sentence?
The phrase "are key for" is used to highlight the importance of certain elements in achieving a specific outcome. For example, "Strong communication skills are key for effective leadership."
What can I say instead of "are key for"?
You can use alternatives like "are crucial for", "are essential for", or "are vital for" depending on the context.
Is it correct to say "is key for" instead of "are key for"?
The correct form depends on whether you are referring to a singular or plural subject. Use "is key for" with a singular subject (e.g., "Communication is key for success"), and "are key for" with a plural subject (e.g., "Communication and collaboration are key for success").
What is the difference between "are key for" and "are important for"?
"Are key for" implies a higher level of necessity compared to "are important for". While something that is important contributes to an outcome, something that is key is essential and indispensable for that 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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested