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
and why is that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "and why is that" is correct and usable in written English.
It can be used when asking for clarification or reasoning behind a statement or situation. Example: "I noticed you seem upset today; and why is that?"
✓ Grammatically correct
News & Media
Academia
Formal & Business
Alternative expressions(2)
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
45 human-written examples
"And why is that?
News & Media
And why is that important?
News & Media
And, why is that?
And why is that exciting?
News & Media
And why is that so?
News & Media
Bill Loveless: And why is that?
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
15 human-written examples
And why's that?
News & Media
No and why's that?
News & Media
"And why was that important?," you ask.
News & Media
And why was that important?
Science
And so why is that?
Expert writing Tips
Best practice
When using "and why is that" in written form, ensure it follows a statement or observation to which you want a justification or explanation. It works best as a follow-up question.
Common error
Avoid using "and why is that" excessively in a short span, as it can sound repetitive or interrogative. Variety your questions to maintain engagement.
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "and why is that" functions as an interrogative expression. It serves to elicit further explanation or justification for a preceding statement or situation. Ludwig AI confirms its correct usage across diverse contexts.
Frequent in
News & Media
60%
Academia
20%
Formal & Business
10%
Less common in
Science
5%
Encyclopedias
3%
Wiki
2%
Ludwig's WRAP-UP
In summary, "and why is that" is a versatile interrogative phrase used to solicit explanations or justifications. Ludwig AI confirms its grammatical correctness and widespread usage across contexts like News & Media, Academia, and Formal & Business settings. While generally neutral in tone, it's essential to be mindful of potential alternatives for formal situations and avoid overuse. As demonstrated by Ludwig, understanding the phrase's function and purpose allows for its effective incorporation into various forms of communication, both written and spoken.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
What's the reason for that?
More direct and less conversational.
Why is that the case?
More formal and emphasizes the situation or fact.
Can you explain why?
Directly requests an explanation from the speaker.
Why is that so?
Emphasizes the surprising or unexpected nature of the statement.
What makes you say that?
Challenges the basis for the statement.
What's the explanation for that?
Formal and seeks a detailed account.
How come?
Informal and concise way to ask for a reason.
To what do you attribute that?
More formal and seeks the cause or source.
On what basis do you say that?
Formal and challenges the evidence or justification.
What's behind that?
Implies a hidden or underlying reason.
FAQs
How can I use "and why is that" in a sentence?
You can use "and why is that" after someone makes a statement to politely ask them to elaborate on their reasoning. For example, "The project was delayed, and why is that?"
What's a more formal alternative to "and why is that"?
Alternatives such as "What is the reason for that" or "Why is that the case" can be used in more formal settings.
Is it appropriate to use "and why is that" in professional emails?
Yes, but use it sparingly. In formal communication, consider alternatives like "can you explain why" or "what is the explanation for that" to maintain a professional tone.
What's the difference between "and why is that" and "why is that"?
Adding "and" softens the question, making it sound less abrupt and more conversational. "Why is that?" is more direct and can sometimes come across as challenging, which depending on the context might be exactly what you intend.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested