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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
I once used
Grammar usage guide and real-world examplesUSAGE SUMMARY
"I once used" is correct and usable in written English.
You can use it to refer to an action that occurred in the past and has since been discontinued. For example: "I once used to enjoy going to the movies, but now I prefer to stay home and watch them on TV."
✓ 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
30 human-written examples
I once used two gallons to travel 35 miles.
News & Media
I once used a bubble gun during a traffic jam on the M1.
News & Media
I once used sign language as an act of resistance, but it is really just one more language".
News & Media
I once used the hallway to make noise and be alone; now I am here to be quiet and alone.
News & Media
Use a quiz: I once used a quiz that asked questions like: what was your first pet's name?
News & Media
They probably couldn't tell, from the fact that I once used their website to send some flowers to my mother, that I don't like "per una" clothes.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
30 human-written examples
As I held the coin that I had once used to buy ice-cream cones, I felt a pang.
News & Media
So I bought a fake ID, which I never once used to buy any illicit substances or get into cool clubs of any kind.
News & Media
I feel so strongly about this that I never once used it during my decade-long career as the head of a major wealth management business.
News & Media
Like Belle, I had once used them - in a travel book review when working for Amazon.co.uk.
News & Media
Though now a reformed wine snob, I, too, once used Lambrusco as a punch line, even while getting hints of a small tear in the matrix.
News & Media
Expert writing Tips
Best practice
When using "I once used", ensure the context clearly indicates why you no longer use the item or method. This provides more complete and informative sentences.
Common error
Avoid using "I once used" without explaining the change in your current practice. The lack of an explanation can leave the reader wondering why you stopped.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I once used" functions as a statement of past experience. It introduces a specific item, method, or tool that the speaker utilized in the past but no longer uses. Ludwig confirms its correct usage.
Frequent in
News & Media
80%
Formal & Business
10%
Science
5%
Less common in
Academia
3%
Encyclopedias
1%
Wiki
1%
Ludwig's WRAP-UP
In summary, the phrase "I once used" is a grammatically sound and commonly used way to express a past action or experience. As validated by Ludwig, it's suitable for general communication across various contexts, with a primary presence in news and media. When employing this phrase, ensure you provide adequate context to clarify why the past usage has changed. Alternatives such as "I previously utilized" or "I had used in the past" can add nuance depending on your intention. Be mindful not to create redundancy by saying "I once used to", and always consider the explanation behind the change in practice for a more informative statement. Ludwig's examples demonstrate these points well.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
I used to use
Employs the construction "used to use" to express a past habit or repeated action.
I at one time used
Replaces "once" with "at one time", offering a slightly different nuance to the timing of the past action.
I had used in the past
Emphasizes the past nature of the usage with the addition of "in the past".
I have in the past used
Similar to "I had used in the past", but with a present perfect construction, implying a connection to the present.
I previously utilized
Replaces "used" with a more formal synonym, "utilized", and "once" with "previously", emphasizing the action happened before.
I formerly employed
Uses "employed" as a synonym for "used", suggesting a more deliberate or structured past usage.
I, on one occasion, used
Adds emphasis on a singular instance of past use.
I remember using
Shifts focus to the speaker's memory of using something.
I am a former user of
Frames the speaker as someone who used to use something, but no longer does.
I benefited from using
Focuses on the positive aspect of using something in the past.
FAQs
How can I use "I once used" in a sentence?
Use "I once used" to refer to something you employed or utilized in the past but no longer do. For example, "I once used a map for navigation before smartphones were common."
What are some alternatives to "I once used"?
You can use alternatives like "I previously utilized", "I formerly employed", or "I had used in the past" to express a similar meaning.
Is it correct to say "I once used to"?
While "I once used" is grammatically sound to describe something from your past, "I once used to" is redundant. Simply use "I used to" to express a past habit or state.
What's the difference between "I once used" and "I often used"?
"I once used" refers to a single or limited number of past uses, whereas "I often used" indicates a frequent or habitual past use. The former highlights a specific instance; the latter, a recurring behavior.
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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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested