Used and loved by millions
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
mostly when it
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "mostly when it" is correct and usable in written English.
It can be used to indicate that something occurs frequently or primarily during specific circumstances or times. Example: "I find myself feeling more creative mostly when it rains, as the sound of raindrops inspires my writing."
✓ Grammatically correct
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
13 human-written examples
For example, Roger G. Ackerman, the former chairman of Corning, sold $14 million of the company's stock last year, mostly when it was trading at about $57 a share, or seven times its current price.
News & Media
He rebounded the ball mostly when it came near him and scored 13 points on 13 shots, with eight rebounds and a block.
News & Media
Unlike merchandise pegged to Christmas or back-to-school shopping tied to the calendar, cold-weather gear is bought mostly when it is needed.
News & Media
National Grid makes the payments in return for wind farms not generating electricity, mostly when it is very windy and there is low demand.
News & Media
Mostly when it comes to the history of football there are far more tales of kicking misery than sweet stories of success.
News & Media
The value of these developments and discussions are variable, though (with the exception of VAWA) they are particularly interesting because they say something striking about how we talk about violence against women – namely, that we talk about it mostly when it involves sex, or a bit of Hollywood glamour, and when can cordon off the behavior.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
47 human-written examples
But mostly, when I daydreamed, it was about being an author.
News & Media
I noticed that I lived with a free pass to be myself mostly when I lost it -- when I did try shaving my legs a few times over the years.
News & Media
Yes, well it is, it is mostly when I'm careless, or I'm somewhat careless with the food, or I don't always have time to eat when I should eat.
Science
Sometimes I get caught in a situation where I need it, mostly when I want to tip someone.
News & Media
But for me I did it mostly when I was happy.
News & Media
Expert writing Tips
Best practice
Use "mostly when it" to clearly indicate the primary circumstance or condition under which an event or action typically occurs. This helps to provide context and avoid ambiguity.
Common error
Avoid using "mostly when it" if the condition is not truly the predominant one. If the action occurs under various conditions, a more general phrase like "sometimes when it" or "often when it" might be more appropriate.
Source & Trust
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "mostly when it" functions as an adverbial clause, modifying a verb or clause to specify the circumstance under which an action predominantly occurs. It indicates a condition or situation that frequently triggers a particular outcome, as seen in Ludwig's examples.
Frequent in
News & Media
50%
Science
30%
Formal & Business
20%
Less common in
Encyclopedias
0%
Wiki
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "mostly when it" serves as a useful adverbial clause to specify the primary condition under which an event typically happens. According to Ludwig, it is grammatically correct, and while it might not be the most frequent phrase, it is commonly found in news and media, as well as scientific contexts. When using this phrase, ensure that the condition you specify is truly the most predominant to avoid overgeneralizations. Alternatives such as "primarily when it" or "mainly when it" can also be used to convey a similar meaning. The phrase holds a neutral formality, being appropriate for a wide variety of contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
primarily when it
Replaces "mostly" with "primarily", indicating the action happens chiefly under the specified condition.
mainly when it
Substitutes "mostly" with "mainly", suggesting a principal but not necessarily exclusive condition.
usually when it
Changes "mostly" to "usually", indicating a common but not invariable occurrence.
typically when it
Replaces "mostly" with "typically", denoting a representative or standard condition.
generally when it
Substitutes "mostly" with "generally", suggesting a broad or common condition.
in most cases when it
Adds "in most cases" to clarify that the condition applies to the majority of instances.
more often than not when it
Replaces "mostly" with a longer phrase emphasizing the frequency of the condition.
frequently when it
Substitutes "mostly" with "frequently", highlighting the regularity of the condition.
as a rule when it
Changes the structure to indicate a general principle or guideline for when something happens.
on the whole when it
Replaces "mostly" with "on the whole", suggesting that the condition generally applies.
FAQs
How can I use "mostly when it" in a sentence?
Use "mostly when it" to specify the primary condition or circumstance under which an action or event typically happens. For example, "I feel most creative "mostly when it rains"".
What are some alternatives to using "mostly when it"?
You can use alternatives like "primarily when it", "mainly when it", or "usually when it" to convey a similar meaning, depending on the specific context.
Is it grammatically correct to say "mostly when it"?
Yes, the phrase "mostly when it" is grammatically correct and commonly used to indicate the primary condition under which something occurs. It is acceptable in both writing and speech.
What's the difference between "mostly when it" and "only when it"?
"Mostly when it" indicates a predominant condition, suggesting the action happens frequently under that circumstance, while "only when it" implies exclusivity, meaning the action happens solely under that specific condition.
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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
4.1/5
Expert rating
Real-world application tested