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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
at one time was
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "at one time was" is correct and usable in written English.
It can be used to indicate that something existed or was true in the past but is no longer the case. Example: "The building at one time was a bustling marketplace before it was converted into apartments."
✓ Grammatically correct
News & Media
Academia
Encyclopedias
Alternative expressions(6)
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
Since 1247 Romford has been the site of an enormous street market on High Street (formerly the Colchester highway), which at one time was lined by coaching inns.
Encyclopedias
Dealing with so many conditions and symptoms at one time was frustrating, but I had to press on.
News & Media
Mr. Ruiz Massieu, who at one time was married to Mr. Salinas's sister, was shot on a Mexico City street.
News & Media
He had money, on account of the wealth of his father, William James Sr, an industrialist who at one time was the second richest man in America.
News & Media
New Haven at one time was arguably the leading manufacturing city for horse drawn carriages.
Academia
Whaling, at one time, was the fifth industry in importance in the United States.
Dr. Berliner at one time was one of America's strongest chess players.
News & Media
Rolls at one time was predicting sales of 600 or 700 engines.
News & Media
"Harney County at one time was the wealthiest county in the state," Bundy said.
News & Media
These included Rebecca Mark, who at one time was considered a rival for the top job.
News & Media
But it reversed and at one time was down 8 points.
News & Media
Expert writing Tips
Best practice
Use "at one time was" to clearly indicate a past state that is no longer true, providing context to explain the change. This helps avoid confusion and adds depth to your writing.
Common error
Avoid using "at one time was" in simple sentences where 'used to be' or 'once was' would suffice. Overusing the phrase can make your writing sound unnecessarily verbose.
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "at one time was" functions as an adverbial phrase, modifying a verb or clause to indicate a past state or condition. As confirmed by Ludwig, it's a grammatically sound way to denote something that existed in the past but no longer does.
Frequent in
News & Media
64%
Academia
18%
Encyclopedias
7%
Less common in
Science
11%
Formal & Business
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "at one time was" serves as a clear indicator of a past state that has since changed. As Ludwig confirms, it's grammatically correct and versatile, fitting into various contexts from news reports to academic discussions. While "used to be" or "once was" offer more concise alternatives, "at one time was" provides a slightly more formal tone, useful for adding emphasis or historical perspective. Be mindful of potential verbosity and consider the most appropriate wording for your context.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
used to be
Replaces "at one time was" with a more concise and common expression.
once was
Simplifies the phrasing while retaining the original meaning.
formerly was
Introduces a slightly more formal tone.
had been
Shifts the focus to a completed action or state in the past.
in the past was
Emphasizes the temporal aspect more explicitly.
previously was
Similar to 'formerly', but slightly less formal.
back then was
Adds a colloquial feel to the expression.
in earlier days was
More descriptive and less direct than the original.
at a prior time was
A more elaborate and formal alternative.
it once happened to be
Adds a narrative element, emphasizing a past occurrence.
FAQs
What does "at one time was" mean?
The phrase "at one time was" indicates that something existed or was true in the past but is no longer the case in the present. It's used to describe a previous state or condition that has changed.
How can I use "at one time was" in a sentence?
Use "at one time was" to highlight a change over time. For example: "The building "at one time was" a bustling marketplace before it was converted into apartments."
What can I say instead of "at one time was"?
You can use alternatives like "used to be", "once was", or "formerly was" depending on the context.
Is there a difference between "at one time was" and "used to be"?
While both phrases indicate a past state, "used to be" is generally more concise and common. "At one time was" can add emphasis or formality, but it's often interchangeable with "used to be".
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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
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested