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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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key reason for

Grammar usage guide and real-world examples

USAGE SUMMARY

'key reason for' is a correct and usable phrase in written English.
This phrase is usually used to introduce the explanation or explanation of a particular situation or condition. For example: "The key reason for the drop in sales this month is the lack of promotional campaigns."

✓ Grammatically correct

News & Media

Science

Formal & Business

Encyclopedias

Wiki

Reference

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

That touches on another key reason for the UFC's success.

Mr. Scott missed a key reason for audiences' current appetite for fantasy movies.

News & Media

The New York Times

The key reason for saving in the home is reliable access.

News & Media

The Guardian

Support amongst the young appears to be one key reason for the BJPs success.

News & Media

The Guardian

The bond between paper and audience is one key reason for its success.

News & Media

The Guardian

A key reason for this Sunday afternoon drama was Bjorn's latest collapse.

Support among the young appears to be a key reason for the BJP's success.

News & Media

The Guardian

A key reason for Fisher's involvement in Corbyn's Labour party is the anti-austerity stance.

News & Media

The Guardian

Balkam points to the anonymity allowed on Kik as a key reason for his concern.

The report notes that a key reason for this is how demanding the job can be.

News & Media

The Guardian

Lack of supply has been cited as a key reason for rising prices across the country.

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Expert writing Tips

Best practice

Pair "key reason for" with strong evidence or data to support your claim, enhancing the credibility of your argument.

Common error

Avoid using "key reason for" repeatedly within a short paragraph or passage. Vary your language by using synonyms like "primary cause", "main factor", or rephrasing the sentence to maintain reader engagement and avoid sounding monotonous.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "key reason for" functions as a causal indicator, introducing the most important explanation or cause for a particular situation or phenomenon. As Ludwig AI explains, it highlights the primary driver behind an event or outcome.

Expression frequency: Very common

Frequent in

News & Media

35%

Science

30%

Formal & Business

15%

Less common in

Encyclopedias

7%

Wiki

7%

Reference

6%

Ludwig's WRAP-UP

In summary, "key reason for" is a versatile phrase used to introduce the most important cause or explanation for something. Ludwig AI confirms its correctness and usability in written English. It's commonly found in news, scientific, and formal business contexts. When using this phrase, ensure the reason you provide is indeed the most significant and support it with evidence. Avoid overusing it in close proximity and consider synonyms to maintain reader engagement. By following these guidelines, you can effectively use "key reason for" to enhance the clarity and impact of your writing.

FAQs

How can I use "key reason for" in a sentence?

The phrase "key reason for" is used to highlight the most important explanation or cause of something. For example: "The "key reason for" the company's success was its innovative marketing strategy."

What are some alternatives to "key reason for"?

You can use alternatives like "primary cause of", "main explanation for", or "chief factor in" depending on the context. Each emphasizes a slightly different aspect of causation or explanation.

Is it correct to say "a key reason is because"?

While commonly used, "a key reason is because" can be redundant. It's generally better to say "the "key reason is"" followed by the reason, or use "a "key reason for"" followed by a noun or gerund.

What's the difference between "key reason for" and "one reason for"?

"Key reason for" implies that the reason is the most important or significant, while "one reason for" suggests that it's just one of several possible reasons.

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Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: