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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
worst once
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "worst once" is not correct and does not convey a clear meaning in written English.
It may be intended to express a negative experience or outcome that occurred at least one time, but the phrasing is awkward and unclear. Example: "That was the worst once I tried to cook dinner for my friends."
⚠ May contain grammatical issues
News & Media
Science
Alternative expressions(2)
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
7 human-written examples
This is the private sector at its worst; once the contract is locked in, they become gleefully inert.
News & Media
(Readers should be advised that the article contains some fairly disturbing material — and you haven't encountered the worst once you make it past the opening description of the murders).
News & Media
He took a shocking fall at Aintree the following month and his fans had cause to fear the worst once more, as he pulled up lame, bleeding badly from a cut, and the green screens went up around him.
News & Media
However, things take a turn for the worst once Harriet falls for an aristocratic exile, not knowing that her father and intended fiance are on their way to track her down... Life in Motion: An Unlikely Ballerina by Misty Copeland The final ballet book on our list is another autobiography, this time by American ballet dancer Misty Copeland.
News & Media
This was his reward, eventually after that harrowing opening spell when he must surely have feared the worst once more.
News & Media
Soon after, we compute the centroid (c = frac {1}{n} sum _{j neq w} p_{j}) of all sample points except the worst once.
Human-verified similar examples from authoritative sources
Similar Expressions
53 human-written examples
I must know the worst at once.
News & Media
In a strange way, it's the best kind of feeling, and the worst, at once".
News & Media
Often Money, like gin, can bring out the worst Although once, after a couple stiff ones, My mother gave you her mother's diamond ring.
News & Media
At worst, every once in a while a toddler wakes up and cries and someone hastens off to persuade him or her to fall asleep again.
News & Media
And despite the government's assurances, the farmers here suspect the worst: that once the water is treated, it will be pumped back to Mexico City, leaving the farms dry.
News & Media
Expert writing Tips
Best practice
When aiming for clarity, replace "worst once" with more precise and grammatically accepted alternatives like "worst instance" or "single worst time". This ensures your message is easily understood.
Common error
Avoid using "once" as a noun to describe an event. Instead, consider using words such as "time", "instance", or "occasion" for clarity and grammatical correctness. For example, instead of saying "That was the worst once", try "That was the worst time".
Source & Trust
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "worst once" functions as a noun phrase, though its usage is grammatically questionable. As Ludwig indicates, this phrase does not follow standard English grammar rules and lacks clarity. Better alternatives include "worst time" or "worst instance".
Frequent in
News & Media
60%
Science
20%
Wiki
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "worst once" is grammatically questionable and not commonly accepted in standard English. As Ludwig indicates, it is advisable to use clearer and more grammatically accurate alternatives such as "worst time", "worst experience", or "worst instance". While "worst once" appears in various contexts, including news and media, its informal nature and potential for misinterpretation make it less suitable for formal or professional writing. Therefore, when aiming for precision and clarity, opting for established phrases is highly recommended. In essence, while the intent might be understood, the execution falls short due to grammatical inaccuracies.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
worst instance
Replaces 'once' with 'instance' to denote a specific occurrence, making the phrase grammatically sound and clearer.
single worst time
Emphasizes the singularity and negativity of the occasion, improving the phrase's clarity.
worst occasion
Substitutes 'once' with 'occasion', providing a more formal and grammatically correct alternative.
worst single event
Replaces 'once' with 'single event', emphasizing a specific, negative occurrence.
the nadir
Replaces the entire phrase with a single word indicating the lowest point, providing a more concise alternative.
lowest point
Directly states the concept of the lowest or most difficult moment, offering a simple and clear alternative.
most difficult episode
Replaces the phrase to highlight a challenging event within a larger series of events, improving clarity.
one terrible incident
Specifies a negative event with a strong emphasis on its unpleasant nature, providing a descriptive alternative.
a particularly bad experience
Highlights the subjective negativity of an event, making the phrase more descriptive and clear.
a low point in time
Emphasizes a temporal low point, offering a straightforward and easily understandable substitute.
FAQs
How can I use "worst time" in a sentence?
Use "worst time" to refer to a particularly bad or difficult moment. For example, "That was the "worst time" of my life" indicates a period filled with hardship.
What alternatives can I use instead of "worst once"?
Consider using phrases like "worst experience", "most difficult time", or "lowest point" as clearer and more grammatically sound substitutes.
Is "worst once" grammatically correct?
No, "worst once" is not grammatically correct. It's better to use phrases such as ""worst time"" or "worst experience" to ensure clarity and grammatical accuracy.
What is the difference between "worst once" and "worst time"?
"Worst once" is grammatically incorrect and unclear. "Worst time" is grammatically correct and refers to a particularly difficult or unpleasant moment.
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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
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested