Used and loved by millions
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
reason for that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "reason for that" is correct and usable in written English. You can use it when explaining or justifying a particular situation or decision. Example: "There is a specific reason for that, which I will explain later." Alternative expressions include "cause for that" and "explanation for that."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(20)
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
There is reason for that.
News & Media
There was a reason for that.
News & Media
There is a logical reason for that.
News & Media
And there is a reason for that.
News & Media
But there is a reason for that.
News & Media
There is a good reason for that.
News & Media
And there's a reason for that.
News & Media
There's a good reason for that.
News & Media
There is good reason for that.
News & Media
There is a reason for that.
News & Media
There's no reason for that.
News & Media
Expert writing Tips
Best practice
Pair it with adjectives like 'good', 'simple', 'logical' or 'scientific' to set the reader's expectations for the explanation that follows.
Common error
Avoid using the phrase when the word 'that' refers to a vague or multi-part concept that hasn't been clearly defined. Ensure the reader knows exactly what action or state you are justifying to avoid ambiguity.
Source & Trust
93%
Authority and reliability
4.9/5
Expert rating
Real-world application tested
Linguistic Context
In English, "reason for that" serves as a prepositional phrase where 'reason' is the head noun, 'for' is the preposition and 'that' is a demonstrative pronoun. It functions as a predicative complement or a transitional sentence. According to Ludwig, it is frequently used to link an observation to its justification.
Frequent in
News & Media
75%
Science
15%
Wiki
10%
Less common in
Formal & Business
5%
Social Media
3%
Reference
2%
Ludwig's WRAP-UP
In summary, "reason for that" is an essential tool for clear communication. Ludwig AI data confirms that it is one of the most effective ways to transition from a statement of fact to an explanation. Whether you are writing a journalistic piece for The New York Times or a scientific paper, this phrase provides a smooth logical bridge. It is universally accepted as correct and is highly versatile, especially when modified by adjectives to provide specific emphasis on the nature of the reasoning.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
explanation for that
Shifts the focus toward clarifying or describing how something occurred.
rationale for that
Implies a more structured or logical set of reasons behind a decision.
justification for that
Suggests that the reason is being provided to defend or validate an action.
cause for that
Focuses more on the mechanical or direct origin of an event.
motive for that
Specifically refers to the psychological or personal intent behind an action.
basis for that
Points to the foundational evidence or starting point for a claim.
grounds for that
Often used in legal or formal contexts to denote a sufficient reason.
logic behind that
Emphasizes the thought process or reasoning strategy involved.
underlying factor for that
Suggests a more complex or hidden cause contributing to the situation.
excuse for that
Implies a reason given to mitigate blame or explain a failure.
FAQs
What can I say instead of "reason for that"?
Depending on the context, you can use alternatives like "explanation for that", "rationale for that" or "cause for that".
Is it correct to use "reason for that" in formal writing?
Yes, it is perfectly correct. While often found in journalism, it is also frequent in scientific literature when researchers discuss unclear findings, such as saying the "reason for that remains unclear".
What is the difference between "reason for that" and "reason why"?
The phrase "reason for that" usually points back to a previously mentioned statement, while "reason why" typically introduces a new clause explaining a specific event.
How do I use "reason for that" to start a sentence?
You can start with a connector: 'And there is a "reason for that"' or 'Perhaps there is a "good reason for that"' to bridge two related ideas.
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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
93%
Authority and reliability
4.9/5
Expert rating
Real-world application tested