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
Unwritten rule
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Unwritten rule" is correct and usable in written English.
It can be used to refer to a guideline or expectation that is understood but not formally documented or stated. Example: "In our office, there's an unwritten rule that everyone should respect each other's personal space."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
It's an unwritten rule".
News & Media
"It's an unwritten rule," Mr. O'Sullivan said.
News & Media
It is an unwritten rule between blokes".
News & Media
This is an unwritten rule of working.
News & Media
More than an unwritten rule, that's baseball reality.
News & Media
The unwritten rule, however, was not to ask questions.
News & Media
O.K., it's time to get out the unwritten rule book.
News & Media
Enthusiastic Protestants seem to have flouted that unwritten rule.
News & Media
There is a strange, unwritten rule among theatre directors.
News & Media
The unwritten rule: once a chamar, always a chamar.
News & Media
The Sooner There is an unwritten rule about Jerry Schmidt.
News & Media
Expert writing Tips
Best practice
When discussing company culture or team dynamics, use "unwritten rule" to highlight expected behaviors that aren't formally documented. This can help clarify expectations and foster a more inclusive environment.
Common error
Avoid using "unwritten rule" when referring to official policies or documented procedures. The term specifically denotes informal, unspoken expectations.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "unwritten rule" functions as a noun phrase, typically serving as the subject or object of a sentence. As Ludwig AI confirms, it denotes an informal convention or expectation, often understood but not explicitly stated. Examples from Ludwig show its usage in describing workplace norms, social expectations, and even aspects of sports.
Frequent in
News & Media
75%
Science
10%
Formal & Business
5%
Less common in
Wiki
3%
Academia
2%
Social Media
5%
Ludwig's WRAP-UP
The phrase "unwritten rule" is a commonly used and grammatically sound way to describe an unspoken convention or expectation. As Ludwig AI indicates, it is frequently used across various contexts, particularly in news and media, to identify implicitly understood norms within groups, workplaces, or society at large. While alternatives like "unspoken rule" and "tacit agreement" exist, the core meaning remains consistent: an agreement or practice not formally documented but widely recognized and followed. When using this phrase, ensure you're referring to genuine informal expectations and not official policies, to avoid any confusion.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
unspoken rule
This alternative emphasizes the lack of explicit communication regarding the rule.
tacit agreement
This phrase highlights the implied understanding or consensus without formal expression.
implied norm
This option focuses on the understood standard of behavior within a group or society.
established norm
Refers to a standard or pattern of behavior that is well recognized and followed.
customary practice
This alternative points to a long-standing tradition or habit that is generally followed.
social convention
This phrase refers to established societal norms that guide behavior.
gentleman's agreement
Implies an agreement that is not legally binding but based on trust and honor.
code of conduct
This refers to a set of principles or expectations that guide behavior within a specific group or context. Although a "code of conduct" is often written, sometimes it exists as an unspoken set of expectations.
conventional wisdom
Describes beliefs or assumptions that are widely accepted but not necessarily based on facts.
accepted practice
Highlights that the practice is something that is generally considered the norm.
FAQs
How can I use "unwritten rule" in a sentence?
You can use "unwritten rule" to describe a custom or practice that is not formally documented but is generally understood and followed, such as "There's an "unwritten rule" in the office that you don't use the last of the coffee without making a new pot."
What is an alternative to saying "unwritten rule"?
Alternatives to "unwritten rule" include "unspoken rule", "tacit agreement", or "implied norm". The best choice depends on the specific context.
Is "unwritten rule" the same as a law?
No, an "unwritten rule" is not the same as a law. A law is a formal, legally binding rule enforced by a governing authority, while an "unwritten rule" is an informal custom or practice that is generally followed but not legally enforced.
Where is "unwritten rule" commonly applied?
The "unwritten rule" is commonly applied in various social contexts, including workplaces, sports, and social groups, to describe expected behaviors or norms that are not formally documented.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested