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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
most important rule
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "most important rule" is correct and usable in written English.
You can use it when emphasizing a key guideline or principle that should be followed above all others. Example: "The most important rule in our organization is to always communicate openly and honestly with your team."
✓ Grammatically correct
Academia
Formal & Business
News & Media
Science
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
The most important rule is unwritten but not unspoken.
News & Media
The most important rule of modern peacekeeping is don't bluff.
News & Media
Use video: This is perhaps the most important rule.
News & Media
This is the most important rule of all.
News & Media
"The most important rule in Web page design is to eliminate unnecessary design," Mr. Flanders said.
News & Media
Perhaps the most important rule is that Movie Night people always sit in the first row.
News & Media
My most important rule is one that sums up the 10.
News & Media
And then the most important rule of all … 5 DON'T FORGET YOUR TRAVEL ADAPTOR!
News & Media
It appeared that Northampton failed to apply the most basic, most important rule of concussion.
News & Media
So this is our chance to use probably the most important rule for Fourier integrals.
The chain rule is arguably the most important rule of differentiation.
Expert writing Tips
Best practice
When using "most important rule", ensure it's clear why the rule is paramount and what consequences follow from its violation. Provide context to underscore its significance.
Common error
Avoid labeling a guideline as the "most important rule" if its impact is marginal or if other rules carry similar weight. Reserve this phrase for truly critical directives.
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "most important rule" functions as a noun phrase that highlights a specific guideline or principle as paramount. As evidenced by Ludwig, it's used across diverse contexts to emphasize the critical nature of the rule.
Frequent in
News & Media
50%
Formal & Business
20%
Academia
15%
Less common in
Science
10%
Reference
3%
Wiki
2%
Ludwig's WRAP-UP
In summary, the phrase "most important rule" is a versatile and widely used expression to emphasize the criticality of a guideline, regulation, or principle. As Ludwig AI confirms, it’s grammatically sound and appears frequently across diverse contexts, including News & Media, Formal & Business, and Academia. While it's important to use it accurately and avoid overstating the significance of a rule, understanding its function and purpose allows for effective communication in various settings. Alternatives like "key principle" or "cardinal rule" can offer nuanced variations, depending on the specific intent.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
cardinal rule
Emphasizes inviolability, suggesting the rule is fundamental and must not be broken.
key principle
Focuses on a foundational belief or tenet, rather than a regulation.
primary guideline
Highlights a guiding recommendation, suggesting flexibility.
fundamental principle
Stresses the basic and essential nature of the principle.
essential guideline
Highlights the necessity and importance of the guiding recommendation.
overriding principle
Suggests that the principle takes precedence over others.
chief regulation
Indicates the main and controlling rule or law.
core tenet
Emphasizes a central belief or doctrine.
major precept
Indicates a general rule intended to regulate behavior or thought.
basic requirement
Focuses on a fundamental condition that must be met.
FAQs
How can I use "most important rule" in a sentence?
You can use "most important rule" to emphasize a key guideline or principle that should be followed above all others. For example, "The "most important rule" is to always communicate openly with your team."
What are some alternatives to "most important rule"?
Alternatives include "key principle", "primary guideline", or "cardinal rule", depending on the specific nuance you want to convey.
Is it okay to use "most important rule" in formal writing?
Yes, "most important rule" is appropriate for formal writing. However, ensure the context clearly establishes the rule's significance and impact.
What makes a rule the "most important rule"?
A rule qualifies as the ""most important rule"" when adherence to it directly and significantly affects the desired outcome or prevents severe negative consequences.
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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
4.6/5
Expert rating
Real-world application tested