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
be kept as an
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "be kept as an" is correct and usable in written English.
It can be used when indicating that something should be maintained or preserved in a certain state or condition. Example: "The documents should be kept as an official record for future reference."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(6)
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
6 human-written examples
Punctuation should be kept as an aspiration".
News & Media
The deal also netted Capco the Olympia venue in nearby Kensington, which, unlike Earls Court, will be kept as an exhibition centre and redeveloped.
News & Media
In 1957, when it was clear that Fidel Castro was winning against the Batista regime, Mr Cummings delivered to the Castro guerrillas a supply of weapons paid for by the CIA, which then thought Cuba could be kept as an ally.
News & Media
Another advantage for companies is that data can be kept as an economic asset within the application.
Science
The three cars are meant to be kept as an operative train.
Wiki
1089 is displayed in the museum, the other six cars are meant to be kept as an operative train.
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
Some of this money has already been committed in loan programmes; some has to be kept as a safety margin.
News & Media
Now, Lloyd's itself will be kept as a time capsule, a structure that can receive only the tiniest changes.
News & Media
He recommended that central Beijing, inside the old wall, be kept as a low-rise administrative and cultural center.
News & Media
Management says Taurus will be kept as a "fleet" car.
News & Media
The left internal jugular site should probably be kept as a third choice.
Science
Expert writing Tips
Best practice
When using "be kept as an", ensure the following noun accurately reflects the intended function or role of the subject. For example, "The sample should be kept as an untreated control" clearly defines the sample's purpose.
Common error
Avoid using "like" in place of "as" when indicating a specific role or function. "Like" is for comparisons, while "as" denotes identity or function. Incorrect: 'It was kept like an example.' Correct: 'It was kept as an example'.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "be kept as an" functions as a passive construction used to describe the state of something being maintained or preserved for a specific purpose. According to Ludwig, it is correct and usable in written English.
Frequent in
Science
33%
News & Media
33%
Wiki
17%
Less common in
Formal & Business
0%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "be kept as an" is a grammatically sound construction used to indicate that something is maintained or preserved in a particular state or condition. According to Ludwig, it is correct and usable in written English. Though not exceedingly common, it appears across various contexts, including science, news, and general reference materials. When using this phrase, ensure that the subsequent noun accurately reflects the intended function or role. Alternatives like "be maintained as a", "be retained as a", and "be preserved as a" can offer nuanced variations in meaning.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
be maintained as a
Focuses on the act of maintaining something in its current state, implying ongoing effort.
be retained as a
Implies holding onto something without necessarily altering it.
be preserved as a
Emphasizes keeping something safe from harm or decay.
be conserved as a
Highlights careful management to prevent depletion or loss.
be upheld as a
Suggests supporting or defending something to maintain its status.
be considered as a
Shifts the focus to the act of regarding something in a particular way.
be regarded as a
Similar to 'be considered as a', but with a slightly more formal tone.
be recognized as a
Emphasizes the acknowledgment or acceptance of something's status or role.
be filed as a
Suggests organizing and storing something for future reference.
be logged as a
Focuses on recording or documenting something systematically.
FAQs
How can I use "be kept as an" in a sentence?
Use "be kept as an" to indicate that something should be maintained in a certain condition or role. For example, "The original document should "be kept as an" official record."
What are some alternatives to "be kept as an"?
Depending on the context, alternatives to "be kept as an" include "be maintained as a", "be retained as a", or "be preserved as a".
Is it correct to say "be kept like an" instead of "be kept as an"?
No, it is generally not correct. "Like" is used for comparisons, whereas "as" is used to define a role or function. Therefore, use ""be kept as an"" to indicate the purpose something serves.
What's the difference between "be kept as an" and "be used as an"?
"Be kept as an" implies a state of preservation or maintenance, while "be used as an" indicates an active purpose or function. For instance, 'This sample "be kept as an" example' suggests it is saved for reference, whereas 'This sample will "be used as an" example' means it will actively demonstrate something.
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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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested