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
primarily due to
Grammar usage guide and real-world examplesUSAGE SUMMARY
"primarily due to" is correct and usable in written English.
You can use it to describe why something has happened. For example, "Sales declined this quarter, primarily due to fewer customers."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(20)
dominantly due to
predominantly caused by
significantly influenced by
importantly due to
originally due to
in large part thanks to
mostly because of
substantially due to
largely due to
in large part due to
principally stemming from
mainly as a result of
mostly on account of
generally due to
principally due to
foremost due to
basically due to
largely owing to
largely attributable to
involved due to
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
This is primarily due to a resurgence in housebuilding.
News & Media
This is not primarily due to higher efficiency.
News & Media
"It is primarily due to the current weather".
News & Media
If not, is it primarily due to economic reasons?
News & Media
Health care employment declined, primarily due to cutbacks at several hospitals.
News & Media
"The performance is primarily due to a weak release schedule, which is disappointing," said Bayley.
News & Media
"Nothing personal, but I think it's primarily due to sportswriters working more on opinion than fact.
News & Media
"This optimism is not primarily due to scientific facts, but to hope," said another.
News & Media
This is primarily due to the failure to undertake trials in the last outbreak".
News & Media
EMI's cash position eroded by £178m to £270m, primarily due to repaying £250m of debt.
News & Media
This is believed to be primarily due to effective lobbying by the Liberian disability community.
News & Media
Expert writing Tips
Best practice
Use "primarily due to" to clearly indicate the main reason or cause behind a situation, avoiding ambiguity by specifying the most significant factor influencing the outcome.
Common error
Avoid using "primarily due to" repeatedly within a short paragraph. Vary your language by using synonyms like "mainly because of", "largely due to", or "chiefly resulting from" to maintain reader engagement and avoid sounding repetitive.
Source & Trust
83%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "primarily due to" functions as a causal connector, linking an outcome or result to its primary cause or reason. It indicates that a specific factor is the main explanation for a particular situation. As Ludwig AI explains, this phrase is considered correct and widely usable.
Frequent in
News & Media
41%
Science
38%
Formal & Business
7%
Less common in
Wiki
3%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "primarily due to" is a grammatically sound and very common phrase used to indicate the main cause or reason behind an event or situation. Ludwig AI confirms its correctness and usability. It is suitable for various contexts, especially in news, scientific, and formal writing. While highly useful, avoid overuse by employing alternatives like "mainly because of" or "largely due to". Remember, while the phrase is widely accepted, clear and varied language enhances communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
largely attributable to
Emphasizes the contribution of a factor, similar to "primarily due to" but with a slightly more formal tone.
largely influenced by
This alternative emphasizes the substantial impact of something, sharing similarities with "primarily due to" but stressing the influence.
predominantly caused by
Directly states the causal relationship, emphasizing that the primary factor is the main source of the effect.
mainly a consequence of
Focuses on the outcome or result, suggesting that the primary factor led to a specific consequence.
essentially a result of
This phrase underlines that something is fundamentally caused by something else, with a focus on the outcome.
chiefly resulting from
Highlights the origin or source, indicating that the primary cause produced the observed effect.
principally stemming from
Highlights the origin or root cause, suggesting that the primary factor is the fundamental basis for something.
mostly on account of
Offers a reason or justification, suggesting that the primary factor is the main explanation for something.
fundamentally because of
This option accentuates the core reason or underlying cause, emphasizing the basic explanation.
significantly influenced by
Suggests a strong impact or effect, indicating that the primary factor played a crucial role in shaping something.
FAQs
How can I use "primarily due to" in a sentence?
Use "primarily due to" to explain the main reason behind a particular outcome or situation. For example, "The project's delay was "primarily due to" unforeseen technical challenges."
What are some alternatives to "primarily due to"?
You can use alternatives such as "mainly because of", "largely due to", or "chiefly resulting from" to express a similar meaning. These alternatives offer slightly different nuances in emphasis and formality.
Is it correct to say "primarily due to"?
Yes, it is grammatically correct and commonly used in both formal and informal writing to indicate the main cause or reason for something.
What is the difference between "primarily due to" and "secondarily due to"?
"Primarily due to" indicates the main or most significant cause, while "secondarily due to" refers to a less important or contributing factor. For example, the decline in sales was "primarily due to" increased competition and "secondarily due to" seasonal changes.
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
83%
Authority and reliability
4.6/5
Expert rating
Real-world application tested