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
was once
Grammar usage guide and real-world examplesUSAGE SUMMARY
"was once" is a correct and usable phrase in written English.
You can use it to describe something that happened in the past but no longer occurs or is true. Example: He was once a successful businessman, but now he works in a small shop.
✓ Grammatically correct
News & Media
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
Or he was once.
News & Media
Racism was once raw.
News & Media
Ronaldinho was once incomparable.
News & Media
This was once true.
News & Media
THE pattern was once predictable.
News & Media
He was once colossally fat.
News & Media
I was once there myself".
News & Media
Such rhetoric was once familiar.
News & Media
He was once City Scavenger.
News & Media
She was once a dancer.
News & Media
She was once his student.
News & Media
Expert writing Tips
Best practice
Use "was once" to clearly indicate a state or condition that existed in the past but is no longer true in the present. This helps avoid ambiguity and provides context for understanding changes over time.
Common error
Avoid using "was once" when describing a state or condition that is still true. It's meant to indicate a change, so using it for something that hasn't changed is incorrect and misleading.
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "was once" functions as a past state indicator. It connects a subject with a condition or identity that existed at a prior time but no longer holds true. As Ludwig AI confirms, this is a common and grammatically sound construction.
Frequent in
News & Media
94%
Encyclopedias
3%
Formal & Business
1%
Less common in
Science
1%
Academia
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "was once" is a grammatically sound and very common phrase used to indicate a past state or condition that is no longer true. As Ludwig AI pointed out, it is mostly used in a neutral register in journalistic and historical contexts, with a high frequency in news and media sources. When writing, be sure to use "was once" to provide context and highlight changes over time, avoiding its misuse to describe something that is still true. Remember there are alternative phrases you can use such as "used to be" or "formerly" for a different flavor. By understanding these nuances, you can effectively incorporate "was once" into your writing and improve the clarity and impact of your message.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
used to be
Indicates a past habit or state that is no longer true.
once was
Inverts the original phrase while maintaining the core meaning.
at one time
Emphasizes that something was true or existed in the past.
formerly
A formal way to say something was the case in the past.
previously was
Emphasizes the change from a prior state.
in the past
A general way to refer to a time before the present.
back then
Refers to a specific time in the past, often contrasting with the present.
had been
Highlights a state that existed before another event in the past.
in earlier times
A more elaborate way of referring to the past.
it was then
Highlights a past characteristic or quality.
FAQs
How do I use "was once" in a sentence?
Use "was once" to describe something that existed or was true in the past but is no longer the case. For example, "That building "was once" a school, but now it's an office building."
What are some alternatives to the phrase "was once"?
You can use phrases like "used to be", "at one time", or "formerly" as alternatives to "was once", depending on the specific context.
Is there a difference between "was once" and "used to be"?
While both phrases indicate something that was true in the past but isn't now, "used to be" often implies a habitual action or state, while "was once" simply indicates a past condition or identity.
Can I use "was once" to describe something that might return in the future?
While technically possible, "was once" is generally used to describe something that is unlikely to return in its original form. If there's a reasonable chance of it returning, consider using a phrase like "is currently not" or "is temporarily unavailable".
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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
4.6/5
Expert rating
Real-world application tested