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
let apart
Grammar usage guide and real-world examplesUSAGE SUMMARY
"let apart" is not a grammatically correct phrase in English.
The correct phrase is "let alone." It is used to indicate that something is even less likely or possible. Example: "I can't afford a new car, let alone a luxury one like that."
⚠ May contain grammatical issues
Science
News & Media
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
1 human-written examples
Overall plantlet growth –as estimated by mean plant height after emergence– showed a similar trend over time for the two lines, let apart a systematic delay of 2 3 d for the OCI-expressing tubers (Fig. 4b).
Science
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
It's not always that easy, and there are relationships that are really precious that I regret having let fall apart.
News & Media
"How many times had they put the world back together?" wonders Galen: "Why not let it fall apart and stay apart, why not let the truth happen?" So builds the dreadful climax and dark denouement of this brilliant narrative.This is not a relaxing or consoling book.
News & Media
Or another clown like Yeltsin, who let everything fall apart.
News & Media
He was either Bloody Nicholas or stupid, weak Nicholas, who had let everything fall apart".
News & Media
"We need to stick together, more than ever – we can't let Europe fall apart".
News & Media
This is what happens when you let buildings fall apart through neglect".
News & Media
This time, he let comics rip apart his life but sat there patiently.
News & Media
"Every time she came over she let him tear apart her purse," Ms. Van Riper said.
News & Media
"He was worried, and said keep an eye on Sandi, don't let her fall apart".
News & Media
We let Afghanistan fall apart after the victory over the Soviet-backed government in 1992.
News & Media
Expert writing Tips
Best practice
Avoid using the phrase "let apart" in formal writing. Opt for clearer alternatives like "set aside" or rephrase your sentence to avoid the construction altogether.
Common error
Be careful not to confuse "let apart" with the idiom "let alone", which means "not to mention" or "even less so". Using "let apart" when you mean "let alone" will result in a grammatically incorrect and confusing sentence.
Source & Trust
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "let apart" is generally considered grammatically incorrect. Although some limited examples exist, it does not function as a standard grammatical construction. Ludwig AI indicates that "let alone" is the correct form.
Frequent in
Science
30%
News & Media
30%
Formal & Business
10%
Less common in
Encyclopedias
10%
Wiki
10%
Reference
10%
Ludwig's WRAP-UP
In summary, the phrase "let apart" is not grammatically correct in standard English. As Ludwig AI points out, the correct phrase is "let alone". Although some examples can be found, it's best to avoid using "let apart" and instead opt for more accurate and widely accepted alternatives like "set aside" or to rephrase the sentence entirely for clarity. Using accurate grammar ensures effective communication and avoids confusion.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
set aside
Focuses on reserving something, differing from allowing separation.
leave separate
Emphasizes maintaining a state of separation, not necessarily allowing it to begin.
allow to separate
Highlights permission for entities to become distinct, varying from simply allowing space between them.
keep distinct
Implies a continuous effort to maintain the difference, not just an initial allowance of separation.
distinguish between
Focuses on recognizing differences, rather than permitting physical separation.
differentiate
Similar to 'distinguish', highlighting the act of finding or creating differences.
permit to diverge
Suggests an acceptance of differing directions or paths, not merely physical space.
enable separation
Emphasizes facilitating a split, not just allowing a pre-existing condition.
grant independence
Highlights bestowing autonomy, which goes beyond physical separation to include decision-making.
authorize division
Suggests an official or formal sanctioning of a split, differing greatly from merely 'letting' something be.
FAQs
Is "let apart" grammatically correct?
No, the phrase "let apart" is not considered grammatically correct in standard English. It's better to use other phrases like "set aside" or rephrase your sentence for clarity.
What does "let alone" mean, and how is it different from "let apart"?
"Let alone" means "not to mention" or "even less so", while "let apart" is not a recognized phrase. For example, "I can't afford a car, "let alone" a luxury car."
How can I rephrase a sentence that incorrectly uses "let apart"?
Consider using phrases like "leave separate", "allow to separate", or "keep distinct" depending on the context. Ensure the revised sentence accurately conveys your intended meaning.
Are there situations where "let apart" might be acceptable?
While not standard, in highly specific technical contexts, it might appear, but it's generally advisable to seek clearer, more conventional alternatives to avoid confusion. Always prioritize clarity and grammatical correctness.
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
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested