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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
just when
Grammar usage guide and real-world examplesUSAGE SUMMARY
"just when" is a perfectly acceptable phrase to use in written English.
You can use it to join two clauses together which create an unexpected contrast. For example: Just when I thought all hope was lost, a miracle happened.
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(20)
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
59 human-written examples
Just when the I.V.F.
News & Media
It's just when".
News & Media
Just when you need it?
News & Media
Just when we were getting somewhere.
News & Media
Not just when I was a girl.
News & Media
It isn't just when they recline.
News & Media
Just when you're able to admit.
News & Media
I mean, just when you want to.
News & Media
"It was just when".
News & Media
"Just when I move".
News & Media
"Just when is the question".
News & Media
Expert writing Tips
Best practice
Use "just when" to create a sense of irony or unexpected contrast in your writing. For example, "Just when I thought I had everything figured out, life threw me a curveball."
Common error
Avoid using "just when" to describe a simple sequence of events without an element of surprise or contrast. Using "when" or "as" is more appropriate when there's no unexpected element.
Source & Trust
84%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "just when" functions as a temporal conjunction, connecting two clauses where the second clause introduces an event that occurs unexpectedly or ironically in relation to the first. As Ludwig AI confirms, it's used to create contrast.
Frequent in
News & Media
81%
Science
9%
Wiki
3%
Less common in
Formal & Business
1%
Reference
1%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "just when" is a very common temporal conjunction used to introduce an element of surprise or unexpected contrast. As confirmed by Ludwig AI, it's considered grammatically correct and suitable for use in a variety of contexts, especially in news and media. While it can be used informally, it maintains a generally neutral tone. When using "just when", ensure that the second clause provides a contrasting or unexpected event to fulfill its intended function. Ludwig provides numerous examples of its usage across diverse sources like The New York Times and The Guardian, further illustrating its versatility and widespread acceptance.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
precisely when
This version highlights the exact timing of the event.
at the very moment that
This alternative is more formal and emphasizes the precise timing of an event.
the instant that
This alternative stresses the speed and abruptness of the occurrence.
the minute that
This option conveys a sense of immediacy and brevity.
as soon as
This phrase indicates immediacy and a direct temporal connection.
right as
This option is slightly more informal and colloquial.
at that specific time
This phrase offers a more descriptive and less idiomatic alternative.
in the nick of time
This idiom emphasizes the narrow margin by which something occurred, focusing more on averting a negative outcome.
when the time was ripe
This alternative suggests a culmination of events leading to a specific moment.
upon the occasion that
This alternative is significantly more formal and less common.
FAQs
How can I use "just when" in a sentence?
Use "just when" to introduce an unexpected event or contrast. For example, "Just when I was about to give up, I found the solution."
What can I say instead of "just when"?
You can use alternatives such as "at the very moment that", "as soon as", or "the instant that" depending on the context.
Is it always necessary to include a contrasting element after using "just when"?
Yes, "just when" implies a contrast or unexpected turn of events. Without it, the sentence may sound incomplete or illogical. Ensure that the second clause presents a surprising outcome following the initial condition.
What is the difference between "just when" and "when"?
"When" simply indicates the time something happened. "Just when" implies that something unexpected occurred at that particular time, creating a sense of surprise or irony. For instance, "When the phone rang" simply states the time of the call, whereas "just when the phone rang" suggests that the call interrupted something or was otherwise unexpected.
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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
84%
Authority and reliability
4.6/5
Expert rating
Real-world application tested