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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
once-in-a-lifetime event
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "once-in-a-lifetime event" is correct and usable in written English.
You can use it to describe an extraordinary occurrence that is unlikely to happen again in a person's lifetime. Example: "The concert was a once-in-a-lifetime event that drew fans from all over the world."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
44 human-written examples
"This is a once-in-a-lifetime event.
News & Media
This is definitely a once-in-a-lifetime event".
News & Media
The Dragon's Back isn't quite a once-in-a-lifetime event.
News & Media
That's why we dream about wearing the wedding dress – it's a once-in-a-lifetime event".
News & Media
"It's a once-in-a-lifetime event for all of us, something like this.
News & Media
"To the soldiers, it's a once-in-a-lifetime event," Cuban added.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
14 human-written examples
It's not a once in a lifetime event".
News & Media
"For you, 9/11 was a once in a lifetime event," one businessman told me.
News & Media
"It's not a 'my son is getting married, once in a lifetime' event.
News & Media
"This is not something that happens every day; it's a once in a lifetime event," she said.
News & Media
"For us it's about being part of a once in a lifetime event more than the sport itself.
News & Media
Expert writing Tips
Best practice
Use "once-in-a-lifetime event" to effectively communicate the uniqueness and significance of an event, creating a sense of urgency and importance for your audience.
Common error
Avoid using "once-in-a-lifetime event" too frequently, as it can dilute its impact. Reserve it for truly exceptional occasions to maintain its meaning and importance.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "once-in-a-lifetime event" functions as a compound adjective modifying the noun "event". As Ludwig AI confirms, it describes the event, indicating its uniqueness and rarity. It emphasizes that such an occurrence is unlikely to repeat.
Frequent in
News & Media
68%
Science
16%
Formal & Business
8%
Less common in
Wiki
4%
Reference
2%
Encyclopedias
2%
Ludwig's WRAP-UP
In summary, "once-in-a-lifetime event" is a common and grammatically correct phrase used to describe an extraordinary and unlikely-to-repeat occurrence. Ludwig AI validates this, confirming its usability in written English. Predominantly found in News & Media, Science, and Formal & Business contexts, the phrase effectively conveys the uniqueness and significance of an event. Remember to use it judiciously to maintain its impact, and consider related phrases like "unique opportunity" or "rare phenomenon" for variety.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
unrepeatable experience
Focuses on the impossibility of replicating the experience.
chance of a lifetime
Highlights that the event is a positive prospect
unique opportunity
Highlights the singular nature of the chance.
red-letter day
An important or memorable occasion
singular occurrence
Emphasizes the distinctiveness of the event.
historic moment
Stresses the event's importance in history.
unparalleled situation
Indicates the lack of comparable situations.
exceptional circumstance
Underlines the unusual nature of the conditions.
rare phenomenon
Points to the infrequency of the occurrence.
epoch-making occasion
Highlights the event's potential to start a new era.
FAQs
How can I use "once-in-a-lifetime event" in a sentence?
Use "once-in-a-lifetime event" to describe something extraordinary that is unlikely to happen again. For example, "Attending the Olympics was a "once-in-a-lifetime event" for many fans".
What are some alternatives to "once-in-a-lifetime event"?
You can use alternatives such as "unique opportunity", "rare phenomenon", or "unrepeatable experience" depending on the context.
Is it correct to use "once in a lifetime opportunity" instead of "once-in-a-lifetime event"?
Both phrases are grammatically correct, but "once in a lifetime opportunity" usually refers to a chance or possibility, while ""once-in-a-lifetime event"" refers to a specific occurrence or occasion.
What makes an event a "once-in-a-lifetime event"?
A "once-in-a-lifetime event" is characterized by its rarity, significance, and the unlikelihood of it recurring in the same person's lifetime. It often carries a strong emotional or historical weight.
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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
4.5/5
Expert rating
Real-world application tested