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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
greatest reason why
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "greatest reason why" is correct and usable in written English.
It can be used to emphasize the most significant justification or explanation for something. Example: "The greatest reason why we should invest in renewable energy is to combat climate change."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(16)
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
3 human-written examples
According to a recent study, the single greatest reason why so many of us are now obese is that so few of us are now smoking.
News & Media
Many Catholics will see the present crisis in the Anglican Communion as the greatest reason why the Catholic Church should not change her position on the sinfulness of same-sex relations.
News & Media
When we erode the liberties and compromise the values that underwrite our national strength and undermine the greatest reason why our friends respect us and our enemies fear us most, becoming more like that which we have stood against, then the terrorists have won.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
The greatest reasons why start-up ventures in the country discontinue within three and a half years are: unprofitability, lack of access to credit, as well as personal matters (Velasco et al. 2016).
Money and exposure are the greatest reasons why.
News & Media
Great reason why — Lest I revenge.
News & Media
Great reason why: Lest I revenge.
News & Media
Politics is a great reason why Lebanese football was bad.
News & Media
"A great reason why so many were killed was because so many wouldn't leave their friends," Mr Hughes said.
News & Media
Perhaps there's a greater reason why they were so drawn to Zardoz beyond its psychedelic trippiness.
News & Media
There really wasn't any great reason why I wanted to circle the globe over land – I wish there was something more epic in my planning, but I simply wanted to do something fun, challenging and unique.
News & Media
Expert writing Tips
Best practice
Use "greatest reason why" to emphasize a particularly significant factor among several contributing elements. Reserve it for cases where the reason truly stands out in importance.
Common error
Avoid using "greatest reason why" when a simpler explanation suffices. Phrases like "main reason" or "primary cause" can often convey the same meaning without sounding overly dramatic.
Source & Trust
82%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "greatest reason why" functions as a causal indicator, pinpointing the most significant cause or explanation for a specific outcome or situation. Ludwig AI confirms its grammatical correctness and usability.
Frequent in
News & Media
40%
Science
30%
Wiki
15%
Less common in
Formal & Business
5%
Academia
5%
Encyclopedias
5%
Ludwig's WRAP-UP
In summary, "greatest reason why" serves as a potent tool for identifying and emphasizing the single most influential cause behind a specific result. Ludwig AI confirms the phrase's grammatical correctness and usability, revealing its role as a causal indicator. While suitable for various contexts, it's essential to avoid overuse and consider simpler alternatives like "main reason for" or "primary cause of" when appropriate. The analysis reveals that "greatest reason why" is most frequently encountered in News & Media, Science, and Wiki sources. The phrase is usually intended for formal writing but not necessarily scientific or academic writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
primary reason for
Replaces "greatest" with "primary", emphasizing the main reason.
main reason for
Substitutes "greatest" with "main", highlighting the principal cause.
chief reason for
Uses "chief" instead of "greatest", stressing the leading reason.
principal cause of
Replaces "reason" with "cause", focusing on the primary factor.
biggest reason for
Uses "biggest" in place of "greatest", indicating the most substantial reason.
most important reason for
Emphasizes importance rather than greatness, indicating the key reason.
foremost reason for
Replaces "greatest" with "foremost", suggesting the most prominent reason.
leading cause of
Substitutes "reason" with "cause", highlighting the main factor contributing to an outcome.
overriding reason for
Indicates a reason that takes precedence over others.
underlying reason for
Focuses on the fundamental reason behind something.
FAQs
How can I use "greatest reason why" in a sentence?
Use "greatest reason why" to emphasize the most significant justification or explanation for something. For example: "The "primary reason for" our success is our dedicated team."
What are some alternatives to "greatest reason why"?
You can use alternatives like "main reason for", "principal cause of", or "chief reason for" depending on the context.
Is "greatest reason why" formal or informal?
The phrase "greatest reason why" is generally considered neutral and can be used in both formal and informal contexts, although it's more common in analytical or explanatory writing.
What's the difference between "greatest reason why" and "a major factor in"?
"Greatest reason why" implies the single most important cause, while "a major factor in" suggests one of several significant contributors.
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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
82%
Authority and reliability
4.3/5
Expert rating
Real-world application tested