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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
let us know with
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "let us know with" is not correct in standard written English.
It is typically used when asking someone to inform you about something, but the preposition "with" is not appropriate in this context. Example: "Please let us know if you have any questions."
⚠ May contain grammatical issues
News & Media
Academia
Alternative expressions(7)
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
7 human-written examples
Let us know with a comment.
News & Media
Let us know with a comment below.
News & Media
Let us know with your comments below.
News & Media
Let us know with a signed receipt from his father.
News & Media
Let us know with the hashtag #WorldFilm100 on Facebook and Twitter.
News & Media
Let us know with #TakeMeBack!
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
53 human-written examples
Miller lets us know, with titles, who is performing and where; Wiseman, proceeding in his customary manner, presents long scenes without identifying anyone.
News & Media
She also lets us know, with the strength of her bewitching, spookily accurate performance, that cruelty comes in many forms, all of them human.
News & Media
Letting us know, with little more than a nod and a wink, that he could literally fuck every woman on earth, bring all of their rippling bodies to climax, and still have energy to save the Labour Party.
News & Media
Let us know below, with links if you can find them.
News & Media
But the cast has already let us know this with an expressiveness that — like great sorrow — is beyond words.
News & Media
Expert writing Tips
Best practice
When asking for information or feedback, use the concise phrase "let us know" without the unnecessary preposition "with". This ensures clarity and grammatical correctness.
Common error
The phrase "let us know with" is grammatically awkward. Stick to "let us know" followed by a clause explaining what information you require. For instance, instead of "Let us know with your comments", say "Let us know your comments" or "Share your comments".
Source & Trust
89%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "let us know with" is primarily intended as a request for information or feedback. However, it is grammatically incorrect. As Ludwig AI explains, the preposition "with" is unnecessary and should be omitted. Examples in Ludwig often show correct usages where "with" is absent.
Frequent in
News & Media
50%
Academia
36%
Wiki
14%
Less common in
Science
0%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, while the intention behind the phrase "let us know with" is clear—to solicit information or feedback—it is grammatically incorrect. According to Ludwig AI, the preposition "with" is unnecessary and should be omitted. While examples can be found across various sources, including news media and academic institutions, the proper usage is simply "let us know". For more formal contexts, consider alternatives like "inform us". To maintain clarity and grammatical correctness, avoid using "let us know with".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
let us know
Omitting "with" results in a grammatically correct phrase, suitable for general requests for information.
inform us
A more formal substitute, appropriate for business or academic contexts, focusing on providing information.
tell us
A simple and direct way to ask for information, suitable for informal settings.
share your thoughts
Encourages sharing opinions or ideas, appropriate when seeking feedback.
provide your feedback
Directly asks for feedback, typically used in professional or academic settings.
give us your input
Similar to providing feedback, but broader, encompassing any kind of contribution.
send us your comments
Specifically requests written comments, suitable for online articles or surveys.
contact us
Suggests reaching out for support or inquiries, more general than providing specific information.
get in touch
An informal way to invite communication, broader in scope than specific information requests.
update us
Asks for progress reports or the latest information on a subject.
FAQs
How do I properly use the phrase "let us know"?
Use "let us know" followed by the information you need. For example, "Let us know if you can attend the meeting" is correct, whereas "let us know with" is not.
What's wrong with saying "let us know with"?
The phrase "let us know with" is grammatically incorrect and sounds awkward. It's best to omit the "with" for clarity and correctness.
What can I say instead of "let us know with"?
You can simply say "let us know", or use alternatives like "inform us", "tell us", or "share your thoughts" depending on the context.
Is "let us know with" ever correct in any context?
No, the phrase "let us know with" is generally not considered grammatically correct in standard English. It is better to use "let us know".
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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
89%
Authority and reliability
2.8/5
Expert rating
Real-world application tested