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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
this is chiefly
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "this is chiefly" is correct and usable in written English.
It can be used to indicate that something is primarily or mainly the case, often followed by an explanation or elaboration. Example: "This is chiefly a matter of personal preference, as everyone has different tastes in music."
✓ 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
44 human-written examples
This is chiefly because Menand usually does get it right, sometimes brilliantly so.
News & Media
This is chiefly due to the steep fees that AOL pays cable operators.
News & Media
This is chiefly thanks to "swaps", exports of oil that are balanced by imports of it.
News & Media
And this is chiefly because governments have arranged things that way.
News & Media
This is chiefly because they doubt the effectiveness of 30-second spot advertisements.
News & Media
And it's silly to say this is chiefly a communications or optics problem.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
16 human-written examples
The Diet did not initiate important legislation; this was chiefly the function of the executive.
Encyclopedias
Though Hannibal still maintained himself for some years in southern Italy, this was chiefly due to the exhaustion of Rome.
Encyclopedias
This was chiefly because the world had changed and countries had stirred, but Iran remained in the same state in which it had been.
News & Media
Whatever, this was chiefly an excuse for the presenter, Dr Suzannah Lipscomb, to gaze distractedly at experts, of the Rospa and scientific and Which?
News & Media
An MI5 leak played its part, of course, but this was chiefly because, in the words of the Daily Telegraph, Bingham was "the man who inspired George Smiley".
News & Media
Expert writing Tips
Best practice
When using "this is chiefly", ensure the statement that follows is the most significant reason, not just one of many contributing factors. Prioritize the information that is primarily responsible for the situation.
Common error
Avoid using "this is chiefly" when multiple factors contribute significantly to the outcome. If the cause isn't distinctly dominant, consider using phrases like "this is partly due to" or "among the reasons is".
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this is chiefly" functions as an adverbial phrase or causal connector. It introduces the primary reason or cause for a statement. As Ludwig AI confirms, it is a grammatically correct phrase. Examples from Ludwig show its use in explaining causes or effects.
Frequent in
News & Media
53%
Science
35%
Encyclopedias
6%
Less common in
Academia
3%
Wiki
1%
Formal & Business
1%
Ludwig's WRAP-UP
In summary, "this is chiefly" is a grammatically sound phrase used to introduce the primary cause or reason behind a situation. As confirmed by Ludwig AI, its use is widespread across diverse contexts, especially in news, science, and encyclopedic content. When writing with "this is chiefly", it's important to ensure that the explanation provided truly represents the main contributing factor, differentiating it from secondary or less significant causes. While it's a versatile phrase, alternative phrasings like "this is primarily due to" or "this is mainly because" can add variety and precision to your writing. Being mindful of the context allows for its effective and accurate application.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
this is mainly because
Replaces 'chiefly' with 'mainly because', emphasizing the primary reason.
this is primarily due to
Substitutes 'chiefly' with 'primarily due to', highlighting the principal cause.
this is largely attributable to
Uses 'largely attributable to' instead of 'chiefly', specifying a significant contributing factor.
this is principally owing to
Employs 'principally owing to', providing a more formal alternative.
the main reason for this is
Rephrases the sentence to focus on the 'main reason', altering the structure.
it's mostly a result of
Changes the phrasing to 'mostly a result of', offering a slightly less formal option.
the biggest factor here is
Replaces 'chiefly' with 'the biggest factor', changing the emphasis to a prominent element.
this hinges primarily on
Uses 'hinges primarily on', indicating a critical dependency.
this is fundamentally about
Changes the focus to 'fundamentally about', suggesting a deeper, underlying reason.
at its core, this involves
Rephrases to 'at its core, this involves', highlighting the essential element.
FAQs
How can I use "this is chiefly" in a sentence?
Use "this is chiefly" to introduce the main reason or cause for a particular situation or outcome. For instance, "The company's success this year is chiefly due to its innovative marketing strategy."
What's a more formal way to say "this is chiefly"?
More formal alternatives to "this is chiefly" include phrases like "this is primarily due to" or "this is principally owing to", which add a degree of sophistication to your writing.
Is it okay to use "this is mainly" instead of "this is chiefly"?
Yes, "this is mainly because" is a perfectly acceptable substitute for "this is chiefly", especially in less formal contexts. Both phrases indicate the primary reason or cause.
When should I avoid using "this is chiefly"?
Avoid using "this is chiefly" when there are multiple significant contributing factors and no single cause is clearly dominant. In such cases, phrases like "this is partly due to" or "among the reasons is" might be more appropriate.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested