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
once working
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "once working" is correct and usable in written English.
It can be used to refer to a time when something was functional or operational in the past. Example: "The machine was efficient once working, but it has since broken down."
✓ Grammatically correct
News & Media
Academia
Wiki
Alternative expressions(3)
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
47 human-written examples
I remember once working through a 36-hour stretch.
News & Media
Car salesman seemed a second career; Andrew imagined him once working outdoors.
News & Media
She was found guilty of once "working on a production line making electric fires".
News & Media
Yet both men, once working in the White House, came to see such events as something mostly for the memories.
News & Media
He is 15-3, winning his last seven starts despite only once working more than seven innings.
News & Media
Once working for an outside payroller, they will begin to accrue sick time as required by law.
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
13 human-written examples
The world of Ibrahimovic, who grew up in one of Malmö's most notorious suburbs, is a much bigger leap than that of Larsson, who, like Lagercrantz, lived and worked in Södermalm, a once working-class Stockholm district that is now home to the cultural elite.
News & Media
Over the past 30 years, immigration has transformed these once working-class Labor heartlands into modern Australia's new frontier and muddied their political allegiances.
News & Media
During the first dot-com boom, members of the "Mission Yuppie Eradication Project" posted flyers encouraging residents of the once working-class Latino neighborhood to "vandalize yuppie cars".
News & Media
YOUNG car enthusiasts may find it hard to believe that pickup trucks were once working-class vehicles and no more, the essential tools of tradesmen but blue-collar cousins to the family sedan.
News & Media
She points out, too, the slightly hidden class dimension of the books, which are utterly erased from the movie: Mary is a guide from beyond the stars, but she is also a working-class nanny, and the enchanted, ceiling-sitting people she introduces her charges to are all her relatives — at once working-class Londoners and magical figures, cosmic Cockneys.
News & Media
Expert writing Tips
Best practice
Use "once working" to clearly indicate a state or activity that was true in the past but is no longer the case. This helps to avoid ambiguity regarding the current status.
Common error
Avoid using "once working" when the subject is still currently working or functional. This phrase implies a change of state.
Source & Trust
86%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "once working" functions as an adverbial modifier, indicating a past state of being employed or operational. It modifies the subject, specifying a prior condition. Ludwig examples demonstrate its versatility in describing past jobs, functional states, and social conditions.
Frequent in
News & Media
60%
Academia
20%
Wiki
10%
Less common in
Science
5%
Formal & Business
3%
Reference
2%
Ludwig's WRAP-UP
In summary, the phrase "once working" is a grammatically sound and frequently used expression that functions as an adverbial modifier, indicating a past state of employment or functionality. Ludwig confirms its widespread use and grammatical correctness. It is most commonly found in News & Media, Academic and Wiki contexts, and serves to provide historical context and contrast with a present condition. While versatile, it's crucial to avoid using it when the subject is still currently working or functional to prevent ambiguity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
formerly employed
Focuses specifically on previous employment, differing from general past actions.
earlier employed
Similar to "formerly employed", but slightly less common in usage.
once operational
Similar to "previously functioning", but more general and less technical.
previously functioning
Emphasizes the past operational state of something, applicable to machines or systems.
formerly active
Describes past activity or engagement in a certain role.
previously in operation
Focuses on the past state of something being active or running.
used to work
Indicates a past habitual action of working, less formal than "formerly employed".
having worked before
Highlights the experience gained from past work.
in the past worked
Emphasizes the temporal aspect of past work experience.
at one time working
Highlights a specific period in the past when someone was working.
FAQs
What does "once working" mean?
The phrase "once working" means that something or someone was employed or functional at a certain time in the past, but is not necessarily so now. For example, "He was once working as a chef" indicates he is no longer in that position.
How can I use "once working" in a sentence?
You can use "once working" to describe a past state or profession. For instance, "The factory, "previously functioning", is now closed." or "She, "formerly employed", now volunteers her time."
What are some alternatives to "once working"?
Some alternatives include "formerly employed", "previously functioning", or "used to work", depending on the specific context you wish to convey.
Is it correct to say "once working"?
Yes, it is grammatically correct and commonly used. Ludwig AI confirms its usability in various contexts.
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
86%
Authority and reliability
4.1/5
Expert rating
Real-world application tested