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
is primarily caused
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is primarily caused" is correct and usable in written English.
It can be used when discussing the main reason or factor behind a particular event or phenomenon. Example: "The increase in pollution levels is primarily caused by industrial emissions."
✓ Grammatically correct
Science
News & Media
Encyclopedias
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
60 human-written examples
Sleep apnea in children is primarily caused by large tonsils and adenoids.
News & Media
In chalcogenide glasses, semiconductivity is primarily caused by defective bonds in which a particular atom does not follow its covalent coordination.
Encyclopedias
Trigeminal neuralgia is primarily caused by compression of the nerve near its origin at the pons.
Lag in renewal is primarily caused by a lack in investments.
At mid-latitude, the electron content in the ionosphere is primarily caused by solar irradiance.
Science
Avian cellulitis in broiler chickens is primarily caused by Escherichia coli.
Science
Hyponatremia in patients with CHF is primarily caused by increased activity of arginine vasopressin (AVP).
In the oral cavity oral candidiasis is primarily caused by Candida albicans.
This is primarily caused by improved uniformity on the flow velocity profile among parallel channels.
Impulse noise is primarily caused by malfunctioning pixels in camera sensors, faulty memory locations, and transmission in noisy channel [1].
The extreme climate change is primarily caused by GHG, and the main component of GHG is CO2.
Expert writing Tips
Best practice
When using "is primarily caused", ensure that you provide specific and verifiable causes to maintain credibility and clarity.
Common error
Avoid presenting a single cause as "primarily" responsible without acknowledging potential contributing factors. Acknowledge secondary influences for a more nuanced and accurate description.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is primarily caused" functions as a causal connector, linking an effect to its main cause. Ludwig AI confirms its correct usage in various contexts.
Frequent in
Science
72%
News & Media
8%
Wiki
5%
Less common in
Encyclopedias
3%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "is primarily caused" is a versatile and widely used causal connector, denoting the main factor behind a specific event or phenomenon. According to Ludwig AI, the phrase is grammatically sound and appears frequently across various domains, especially in scientific and news-related contexts. Alternatives like "is mainly caused by" or "is largely attributed to" can provide nuanced variations. When using this phrase, ensure that the primary causes are well-supported with verifiable evidence and avoid overstating the impact of single factors to maintain accuracy and credibility.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is mainly caused by
Changes the emphasis from "primarily" to "mainly", suggesting a slightly lesser degree of dominance in causation.
is largely attributed to
Replaces the direct causal verb "caused" with "attributed to", implying an inference or reasoned connection.
is chiefly due to
Substitutes "primarily" with "chiefly", indicating the main reason or factor.
stems primarily from
Uses "stems from" to convey origin or derivation, maintaining the focus on the primary source.
originates mainly from
Emphasizes the origin of something, similar to "stems from", but with a slightly different connotation.
is predominantly a result of
Rephrases the cause as a "result", highlighting the outcome or consequence.
is fundamentally triggered by
Introduces the idea of a "trigger", implying an initiating event or condition.
is essentially brought about by
Uses "brought about" to mean caused, adding a layer of complexity in phrasing.
is at its root caused by
Highlights the most basic or fundamental cause of something.
is traced back to
Focuses on the ability to follow the cause back to its source, which may not be immediately obvious.
FAQs
How can I use "is primarily caused" in a sentence?
You can use "is primarily caused" to indicate the main reason or factor behind a particular event or phenomenon. For example, "Sleep apnea in children "is primarily caused" by large tonsils and adenoids."
What are some alternatives to "is primarily caused"?
Alternatives include "is mainly caused by", "is largely attributed to", or "is chiefly due to", depending on the specific nuance you want to convey.
Is it correct to say "is primarily due to" instead of "is primarily caused by"?
While "is primarily caused by" is more direct, "is primarily due to" can also be correct, although it is important to ensure the context is appropriate. "Caused by" explicitly indicates a cause, whereas "due to" implies a reason or consequence.
What is the difference between "is primarily caused by" and "is sometimes caused by"?
"Is primarily caused by" indicates the main or most frequent cause, whereas "is sometimes caused by" suggests that the factor is an occasional, but not necessarily the main, cause.
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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested