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
pertain with
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "pertain with" is not correct in standard written English.
The correct expression is "pertain to," which is used to indicate a relationship or relevance to a subject. Example: "The regulations pertain to the safety standards required in the workplace."
⚠ May contain grammatical issues
Science
News & Media
Academia
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
3 human-written examples
These ambiguities can also pertain with respect to other military contingents as well as contractors in a multinational coalition force.
Science
Although speculative, this same differential function of TLRs from the intrauterine to the extrauterine environment could pertain with humans.
Science
In cation exchange (e.g., SCX) of peptides, the opposite orientation may pertain, with the N-terminus facing the stationary phase and the C-terminus remote from it.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
This condition pertains with special poignance to a sphere in which the rich (collectors, patrons) and the relatively poor (artists, intellectuals) intermingle.
News & Media
Additionally, my 93-year-old father (who has a memory like an elephant) mirrors my view, and confirms that such intelligence has pertained with respect to our family for generations, without truncation.
News & Media
The dialogue of the film takes place at two levels throughout — it's performed by the actors and pertains with an intense psychological specificity (and complexity) to the movie's characters, who are rendered, as a result, exceptionally vivid and present even in fleeting appearances.
News & Media
The extent to which these insights into the use of khat in people with schizophrenia pertain to people with HIV requires qualitative exploration.
Science
Here s is the photon path length, and s1 and s2 are limits on path lengths s which pertain to those with nonzero intercepts with the ROI.
Science
Are there things that are untrue or pertain to someone with the same name?
News & Media
This document discusses the guidelines and related works as they pertain to patients with thoracic aortic aneurysms.
In other words, Senate Republicans have the right to change the rules of the Senate as they pertain to filibusters with a simple majority.
News & Media
Expert writing Tips
Best practice
Always use "pertain to" instead of "pertain with" to ensure grammatical correctness. "Pertain to" clearly indicates relevance or relationship to a subject.
Common error
Don't assume that "pertain" follows the same prepositional patterns as other verbs. It specifically requires "to" to link it to its object. Sticking with "pertain to" will keep your writing clear and grammatically sound.
Source & Trust
87%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "pertain with" is an incorrect usage. The verb "pertain" functions to indicate relevance or connection, but it requires the preposition 'to', not 'with'. Ludwig AI clarifies this distinction.
Frequent in
Science
33%
News & Media
33%
Academia
33%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, while the phrase "pertain with" appears in some contexts, it is grammatically incorrect. The correct phrasing is ""pertain to"", which signifies relevance or relationship. As Ludwig AI indicates, this phrase is more commonly found in formal, scientific, and academic writing. To ensure clarity and correctness, always use ""pertain to"" instead of "pertain with". Alternatives like "relate to", "apply to", or "concern" can also be used depending on the specific context.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
relate to
This phrase is a direct and grammatically correct substitute, indicating a connection or relevance to a subject.
apply to
This suggests that something is relevant or has an effect on a particular subject or situation.
concern
Indicates that something is about or relevant to a particular topic or person.
refer to
This phrase denotes a direct connection or relation to a specific subject or point.
be relevant to
Emphasizes the pertinence and importance of something to a specific matter.
have to do with
Suggests a connection or association with a particular subject or topic.
be connected to
Highlights the link or association between different elements or concepts.
regard
Indicates a relationship or reference to a particular subject or aspect.
bear on
This signifies the influence or relevance of something on a particular issue.
pertain to
Corrects the original phrase to proper grammatical form.
FAQs
How should I use the phrase "pertain to" correctly in a sentence?
Use "pertain to" to show a relationship or relevance between two things. For example, "These rules "pertain to" all employees."
What's the difference between "pertain with" and the correct phrase "pertain to"?
"Pertain with" is grammatically incorrect. The correct form is ""pertain to"", which means to relate to or apply to something.
What can I say instead of "pertain to"?
Is "pertain to" formal or informal language?
"Pertain to" is generally considered formal language, suitable for academic, professional, or official contexts.
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
87%
Authority and reliability
2.8/5
Expert rating
Real-world application tested