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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
and crucially when
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "and crucially when" is correct and usable in written English.
It can be used to emphasize the importance of a specific timing or condition in a statement or argument. Example: "The project will succeed, and crucially when all team members are aligned on their roles and responsibilities."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(4)
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
10 human-written examples
The cells looked healthy in a Petri dish and crucially, when injected into rat hearts, were woven into the organ and worked alongside the muscle cells already there.
News & Media
I learned to stuff my gear into one knapsack; never to ask a local where I should eat but, rather, where he ate; never to judge a country by its capital city; never to stay near a mosque (the muezzin wakes you); how to haggle; and, crucially, when I later went to Mongolia, to shout "Nokhoi khor!" — "Hold the dog!" — before entering a yurt.
News & Media
However the real test will be in three and a half years time, when the public get to vote again, on a brighter day in May, for a role they better understand - and, crucially, when they can see what has or hasn't changed.
News & Media
His work focuses on interpreting these clues and identify when a bubble may be forming and, crucially, when it ends.
News & Media
How big was the magma chamber deep underground, how widespread would the effects of an eruption be and crucially, when would it happen?
News & Media
In this way, unjustified wars are more easily avoided, and crucially, when Congress approves war it implicitly pledges to support the military.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
And even, crucially, when it couldn't really afford to be.
News & Media
Stoneman was twice reprieved from straightforward chances – first and most crucially when, with single figures to his name, he edged to Dawid Malan at first slip and later on 116 by the wicketkeeper John Simpson, diving across to floor a ball heading in the same direction.
News & Media
Crucially, when vmPFC and insular cortex groups were compared directly, there was a significant group × ratio interaction effect [ F (3,93) = 4.23, P = 0.032 Greenhouse Geisser corrected ε = 0.485] but the main effect of group did not approach significance [ F (1,31) = 0.210, P = 0.650].
Science
Crucially, when both Abeta and neuronal injury biomarkers are negative, the dementia is unlikely to be attributable to AD pathology [ 1, 10– 10].
Crucially, when both precision and force are allowed to vary simultaneously, reward has the effect of increasing the optimal velocity while also reducing motor variability.
Science
Expert writing Tips
Best practice
Use "and crucially when" to emphasize the importance of timing or a specific condition within a broader context. This helps to highlight the critical element for the reader.
Common error
Avoid using "and crucially when" too frequently in your writing, as it can diminish its impact. Vary your phrasing to maintain reader engagement and avoid sounding repetitive.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "and crucially when" functions as a conjunction, connecting two clauses while emphasizing the importance of the timing or condition expressed in the second clause. This emphasizes a specific trigger point or required element for the preceding statement to be fully realized. Ludwig AI confirms this usage with numerous examples.
Frequent in
News & Media
43%
Science
37%
Academia
20%
Less common in
Wiki
0%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "and crucially when" is a grammatically correct and useful conjunction to emphasize the importance of timing or specific conditions. Ludwig AI identifies its function as connecting clauses and highlighting essential elements, it is most often used in News & Media, Science, and Academia. When writing, ensure that you don't overuse the phrase and explore alternatives like "and importantly when" or "and significantly when" to maintain a diverse and engaging style.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
and critically when
Substitutes "crucially" with "critically", maintaining a similar level of importance but with a slightly more urgent tone.
and importantly when
Replaces "crucially" with "importantly", shifting the focus from critical importance to general significance.
and significantly when
Substitutes "crucially" with "significantly", emphasizing the magnitude or impact of the timing.
and vitally when
Uses "vitally" instead of "crucially", highlighting the essential nature of the timing or condition.
and essentially when
Replaces "crucially" with "essentially", emphasizing the fundamental importance of the condition.
and particularly when
Uses "particularly" instead of "crucially", focusing on the distinctiveness of the situation or time.
and especially when
Replaces "crucially" with "especially", highlighting a specific instance or case.
and notably when
Substitutes "crucially" with "notably", drawing attention to a remarkable or significant moment.
and fundamentally when
Uses "fundamentally" instead of "crucially", stressing the basic or central importance of the timing.
and decisively when
Replaces "crucially" with "decisively", emphasizing the conclusive impact of the timing or condition.
FAQs
How can I use "and crucially when" in a sentence?
Use "and crucially when" to highlight a specific moment or condition that is essential for a particular outcome. For example, "The experiment will succeed, and crucially when the temperature is precisely controlled."
What are some alternatives to "and crucially when"?
You can use alternatives like "and importantly when", "and significantly when", or "and vitally when" to convey a similar meaning with slightly different emphasis.
Is it appropriate to use "and crucially when" in formal writing?
Yes, "and crucially when" is appropriate for formal writing when you need to emphasize the critical importance of a specific timing or condition. However, consider the tone and audience to ensure it fits the overall context.
What is the difference between "and crucially when" and "when"?
"When" simply indicates a time or condition. "And crucially when" adds emphasis to the importance of that particular time or condition, highlighting its significance in relation to the preceding statement.
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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
4.5/5
Expert rating
Real-world application tested