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
chiefly that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "chiefly that" is correct and usable in written English.
It can be used to specify the main point or reason in a discussion or argument. Example: "The report highlights several issues, chiefly that the current strategy is not sustainable."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
57 human-written examples
Chiefly, that means HDMI plugs (High-Definition Multimedia Interface, in case you were wondering), a connection that can transfer high-quality audio, video and data signals.
News & Media
Chiefly that has centered around stoking tension between the Muslim and Buddhist populations in the country.
News & Media
Tech Bureau currently helps companies with consultancy and a range of technical services, but it is preparing to introduce new platforms to cover nearly every aspect of the process of an ICO, also known as token sales, and chiefly that of raising capital.
News & Media
But it has drawbacks, Cavagna says — chiefly that you can't see where you're going.
News & Media
Even his new fans dwell as much in the past as the candidate offering chiefly that.
News & Media
It would be wrong to say the men were not stung by criticism of the work, chiefly that of Jones.
News & Media
Some judges seemed to be concerned chiefly that their cases proceeded according to schedule; Sherman was not one of them.
News & Media
For Sophia, living through the siege of Paris and the Commune "meant chiefly that prices went down".
News & Media
"We worked out the details, chiefly that Hialeah will run its 2000 meet at Gulfstream Park," he said.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
The museum whose last renovation lavished space on just about anything chiefly that colossal, stupid atrium except its collections, of which only a fraction can be on view at a given time?
News & Media
It is also a helpful separation method for the classification of groups within a society, providing a useful link that seems missing in extant theoretical constructs chiefly that of how institutions and all forms of social groups effect and are affected by social development outcomes (of which the development of markets and economic growth is but one).
Expert writing Tips
Best practice
When using "chiefly that", ensure the following clause is the most significant and impactful of the points you are making.
Common error
Avoid using "chiefly that" too frequently in casual writing or speech. It can sound overly formal and stilted in informal settings. Consider using simpler alternatives like "mainly" or "mostly" to maintain a natural tone.
Source & Trust
84%
Authority and reliability
4.4/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "chiefly that" functions as an adverbial connector introducing a clause that specifies the primary reason, cause, or aspect. It is used to highlight the most important point following a statement, as confirmed by Ludwig's examples.
Frequent in
News & Media
33%
Science
33%
Encyclopedias
33%
Less common in
Formal & Business
0%
Academia
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "chiefly that" is a grammatically correct connector used to introduce the primary reason or aspect in a statement. While Ludwig AI confirms its usability, it's relatively rare, appearing mainly in news, scientific, and encyclopedia contexts. When writing, ensure its level of formality aligns with your context, opting for simpler alternatives like "mainly that" or "primarily that" in informal settings. Use "chiefly that" to emphasize the most critical information, guiding your audience to the key takeaway.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
mainly that
Replaces "chiefly" with "mainly", offering a direct synonym with minimal change in meaning.
primarily that
Uses "primarily" instead of "chiefly", suggesting the main or most important aspect.
mostly that
Substitutes "chiefly" with "mostly", indicating the majority reason or point.
in particular that
Replaces "chiefly" with "in particular", emphasizing a specific point.
especially that
Uses "especially" to highlight the most significant aspect or reason.
above all that
Emphasizes the supreme importance of the following reason.
the main thing is that
Rephrases to focus on the core issue or point more directly.
the primary concern is that
Focuses on concerns using a more formal tone.
most importantly that
Highlights the critical nature of the information.
fundamentally that
Indicates a basic or essential reason is being introduced.
FAQs
How can I use "chiefly that" in a sentence?
Use "chiefly that" to introduce the primary reason or factor among several others. For example, "The company faced several challenges, "chiefly that" its marketing strategy was outdated."
What's a good substitute for "chiefly that"?
Alternatives to "chiefly that" include "mainly that", "primarily that", or "mostly that". The best choice depends on the specific nuance you want to convey.
Is it correct to use "chiefly that" in formal writing?
Yes, "chiefly that" is suitable for formal writing. It is a clear and concise way to introduce the most important factor or reason in a discussion or argument.
What is the difference between "chiefly that" and "mainly that"?
"Chiefly that" and "mainly that" are very similar. "Chiefly" suggests the most important or prominent reason, while "mainly" suggests the principal or largest part. The distinction is subtle and context-dependent.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
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
4.4/5
Expert rating
Real-world application tested