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
principally because of
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "principally because of" is correct and usable in written English.
You can use it when you are trying to explain why something happened or is the case. For example, "The job was completed on time, principally because of the hard work of the team."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(20)
mainly due to
primarily as a result of
largely on account of
mainly because of
chiefly attributed to
mostly owing to
predominantly influenced by
fundamentally because
chiefly because of
mostly because of
essentially because of
predominantly because of
notably because of
merely because of
largely because of
especially because of
partly because of
basically because of
main because of
overwhelmingly because of
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 principally because of proxy responses.
News & Media
"It's principally because of the economic situation," he said.
News & Media
Principally because of Murdoch's actions in China, Ottaway has campaigned against Murdoch's ownership.
News & Media
The rise was principally because of favorable foreign currency exchange rates.
News & Media
Western diplomats believe he was ousted principally because of unauthorised efforts to set up peace talks.
News & Media
International earnings rose strongly, principally because of non-operating gains in currency translation in Argentina.
News & Media
Processing techniques in a manufacturing plant are different principally because of the volume of material involved.
Miniaturizing DEAs is challenging principally because of the need for μm-scale compliant electrodes.
Science
Often they find it the greatest, principally because of its stellar assortment of international leading dancers.
News & Media
"Principally because of her green eyes she seems to have a ready-to-pounce, feline quality.
News & Media
Exports continued to increase, principally because of the higher price for soy.
Encyclopedias
Expert writing Tips
Best practice
Use "principally because of" to clearly indicate the main reason for a situation, avoiding ambiguity by placing it near the effect or outcome you are explaining.
Common error
Avoid constructing sentences where the subject is acted upon, which can obscure the cause-and-effect relationship. Instead of saying "The project was delayed, principally because of funding issues", opt for "The project was delayed principally because funding issues arose"
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "principally because of" functions as an adverbial connector, linking a cause or reason to its effect. It specifies that the stated reason is the primary or most important one. Ludwig examples show this clearly in a variety of contexts.
Frequent in
News & Media
64%
Science
21%
Encyclopedias
9%
Less common in
Wiki
1%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "principally because of" serves as a robust and reliable connector, signaling the primary cause behind an event or situation. As confirmed by Ludwig, it is grammatically sound and widely accepted in English writing. Its prevalence in news, scientific literature, and encyclopedias underscores its suitability for formal and neutral contexts. While alternatives like "mainly due to" exist, "principally because of" distinctly emphasizes the paramount importance of the stated reason. Remember to use it actively to present direct causal relationships, ensuring clarity and impact in your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
mainly due to
Focuses on the main reason, similar to the query but with a slightly different structure.
primarily as a result of
Highlights the outcome or consequence of the cause, adding a subtle emphasis on the effect.
largely on account of
More formal, emphasizing the importance of the reason.
chiefly attributed to
Suggests that the reason is the most significant factor and highlights an attribution.
mostly owing to
Similar in meaning, but slightly less formal than "largely on account of".
predominantly influenced by
Highlights the influence of the reason, rather than a direct cause.
fundamentally because
Emphasizes the basic or essential nature of the cause.
in essence because
Similar to fundamentally because but focuses on a summary.
at its root due to
Indicates the underlying or original cause of a situation.
as a main consequence of
Highlights the consequential aspect, framing the reason as a direct result.
FAQs
How can I use "principally because of" in a sentence?
Use "principally because of" to introduce the primary reason for a particular outcome or situation. For instance, "The company's growth stalled, principally because of increased competition".
What phrases are similar to "principally because of"?
Alternatives include "mainly due to", "primarily as a result of", or "largely on account of". The best choice depends on the specific context and desired level of formality.
Is there a difference between "principally because of" and "mainly because of"?
While both phrases indicate a primary cause, "principally because of" suggests that the stated reason is the most important among several possible factors, while "mainly because of" simply points to the major reason without necessarily excluding other significant factors.
When is it appropriate to use "principally because of" in writing?
Use "principally because of" in formal writing when you want to emphasize that a specific reason is the most significant factor contributing to a particular outcome. It's suitable for academic papers, reports, and professional communications where clarity and precision are important.
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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
4.5/5
Expert rating
Real-world application tested