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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
why was that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "why was that" is correct and usable in written English.
You can use it whenever you would like to ask a question about the reason for something that was done or said. For example: "I just missed the deadline – why was that?".
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(20)
what was the reason for that
how did that happen
how did that come about
could you clarify that
can you elaborate on that
who was that
following was that
which was that
being was that
when was that
all was that
where was that
when did that happen
what date was that
was there any particular reason
what was the reason
can you explain why
is there a reason for that
what factors contributed to that
what was the rationale
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
10 human-written examples
Why was that important?
News & Media
Why was that wrong?
News & Media
Why was that decision made?
News & Media
And why was that important?
Science
Ask them "Why was that child absent?
Wiki
Why was that bad?
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
Caroline: Why is that?
News & Media
So why is that?
News & Media
Why is that astonishing?
News & Media
Why's that?
News & Media
Why is that important?
News & Media
Expert writing Tips
Best practice
When using "why was that", ensure the context is clear to avoid ambiguity. The listener or reader should understand what 'that' refers to.
Common error
Avoid using "why was that" without a clear antecedent. Ensure the 'that' has been explicitly mentioned or is easily inferred from the preceding conversation or text.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "why was that" is to serve as an interrogative phrase, prompting for an explanation or reason regarding a previous statement, action or situation. Ludwig AI confirms this usage.
Frequent in
News & Media
60%
Science
20%
Wiki
20%
Less common in
Formal & Business
0%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "why was that" is a grammatically correct and usable interrogative phrase used to request an explanation or reason for a past event or statement. As Ludwig AI indicates, it's a common way to seek clarification. While its frequency is relatively rare, it's most commonly found in News & Media. For more formal contexts, consider using alternatives such as "what was the reason for that". This phrase is generally neutral in register and aims to elicit a response that provides a rationale or justification. Understanding its usage and appropriate contexts will enhance clarity and precision in communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
what was the reason for that
More formal and explicit, emphasizing the 'reason' behind something.
what's the rationale behind that
Inquires about the underlying logic or reasoning.
what's the explanation for that
Seeks a detailed account or justification.
why did that occur
More formal and direct, focusing on the occurrence of an event.
what made that happen
Focuses on the cause or trigger of an event.
how did that come about
Explores the process or circumstances leading to a situation.
could you clarify that
A polite request for further explanation or understanding.
can you elaborate on that
A request for more information or detail.
what's the story there
Informal way of asking for an explanation or background.
what's the deal with that
A casual and slightly dismissive way to inquire about something.
FAQs
How can I use "why was that" in a sentence?
You can use "why was that" to inquire about the reason behind a past action or statement. For example, "The project failed. Why was that?"
What can I say instead of "why was that"?
You can use alternatives like "what was the reason for that", "how did that happen", or "what's the explanation for that" depending on the context.
Is "why was that" formal or informal?
"Why was that" is generally considered informal to neutral. For more formal situations, consider using phrases like "what was the reason for that" or "could you please elaborate?"
What's the difference between "why was that" and "why is that"?
"Why was that" refers to something that happened in the past, while "why is that" refers to a current situation or ongoing state. The first inquires about past reasons, and the second about present ones.
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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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested