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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
is the reason
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is the reason" is correct and usable in written English.
You can use it to explain why something is true or happened. For example, "The lack of support from his family is the reason why he dropped out of college."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(8)
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
54 human-written examples
He is the reason.
News & Media
Legere is the reason.
News & Media
McIlroy is the reason.
News & Media
Austerity is the reason.
News & Media
This is the reason.
News & Media
Montgomery is the reason.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
6 human-written examples
That was the reason".
News & Media
Demographics are the reason.
News & Media
"There's the reason".
News & Media
And that's the reason.
News & Media
Maybe that's the reason".
News & Media
Expert writing Tips
Best practice
Use "is the reason" to clearly and directly state the cause or explanation for a particular event or situation. Ensure the sentence structure is logical to avoid ambiguity.
Common error
Avoid using "is the reason" when only a correlation exists. Just because two events occur together does not mean one caused the other. Ensure there's a clear causal link before using the phrase.
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is the reason" functions as a predicate nominative, identifying the noun or noun phrase that explains a particular outcome or situation. This is supported by Ludwig, which shows numerous examples of the phrase being used to provide explanations.
Frequent in
News & Media
54%
Science
23%
Academia
9%
Less common in
Wiki
5%
Formal & Business
5%
Reference
4%
Ludwig's WRAP-UP
The phrase "is the reason" is a common and grammatically sound expression used to provide explanations or justifications. Ludwig AI confirms its correctness and wide applicability. It is most frequently found in News & Media and Science sources. While versatile, it is important to ensure a clear causal link when using it and avoid confusing correlation with causation. Alternatives like "is the cause" or "is due to" can be used depending on the specific context. The phrase's neutrality makes it suitable for both formal and informal communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is the cause
Focuses more directly on the origin or source of something.
is the explanation
Emphasizes the act of clarifying or making something understandable.
is why
A more concise and informal way to express the reason for something.
is attributable to
Implies that something can be credited or assigned to a specific factor.
is a consequence of
Highlights the result or outcome of a particular action or event.
stems from
Suggests that something originates or develops from a particular source.
is due to
Indicates that something is caused or influenced by a specific factor.
accounts for
Explains the presence or occurrence of something.
is the underlying factor
Emphasizes the fundamental or essential element that influences something.
is the motive
Focuses on the intention or purpose behind an action.
FAQs
How can I use "is the reason" in a sentence?
Use "is the reason" to clearly explain why something happened or is true. For example, "The budget cuts "is the reason" for the program's cancellation".
What are some alternatives to "is the reason"?
You can use alternatives like "is the cause", "is the explanation", or "is due to" depending on the context.
Is it more formal to say "is the reason why"?
Adding "why" after "is the reason" doesn't necessarily make the phrase more formal, but it can add emphasis. Both ""is the reason"" and "is the reason why" are acceptable in many contexts.
What's the difference between "is the reason" and "is because"?
"Is the reason" introduces a noun phrase, while "is because" introduces a clause. For example, "The rain is the reason" vs. "The game is cancelled because it is raining".
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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
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested