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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
ought to be kept
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "ought to be kept" is correct and usable in written English.
It can be used to express a recommendation or obligation regarding the maintenance or preservation of something. Example: "The historical documents ought to be kept in a secure location to ensure their protection."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(20)
should be maintained
must be retained
needs to be conserved
should be kept
should be preserved
has to be secured
is required to be maintained
must be safeguarded
must be preserved
ought to be read
should be incorporated
ought to be updated
should be persisted
should be protected
should be consistently
ought to be paid
needs to be retained
ought to be preserved
should be retained
should be sustained
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
30 human-written examples
Groups that endorse violence ought to be kept at arm's length.
News & Media
Or just that he spoke openly about something you felt ought to be kept secret?
News & Media
"A bad one ought to be kept in fear of them".
News & Media
Managers and supervisors should be trained on equal opportunities and harassment issues, and records ought to be kept.
News & Media
As one proceeds with the history of humanism, the following major points about its development in the 13th and 14th centuries ought to be kept in mind.
Encyclopedias
Robert Gates, Mr Bush's excellent defence secretary who has helped transform the position in Iraq, ought to be kept in the post for at least a while.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
29 human-written examples
Women do not need and ought not to require to be kept by men (and vice versa) after their relationship has come to an end.
News & Media
All positivists, however, are agreed that, although law may meet moral criteria, what the law is and what it ought to be should be kept distinct.
Science
"These things ought to be at least kept an eye on," Dr. Ward said.
News & Media
He also dismisses the common argument that voters ought to be able to keep electing anybody they want to keep electing.
News & Media
Mudford told the inquest that he had not considered whether the room ought to have been kept locked, access to hanging points generally, why Bennell had not been at his scheduled program that afternoon, or attempts by program workers to find Bennell.
News & Media
Expert writing Tips
Best practice
When using "ought to be kept", consider whether "should be maintained" or "must be retained" might be more appropriate for your intended tone and level of formality. Using "ought to" can sometimes sound overly formal or archaic.
Common error
While grammatically correct, "ought to" can sound stilted in modern writing. Overusing it can make your writing seem unnatural. Opt for more common alternatives like "should" or "need to" for a smoother, more contemporary style.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "ought to be kept" functions as a modal verb phrase expressing advice, recommendation, or obligation. It signifies that something should be maintained or preserved, based on a sense of duty or correctness. As confirmed by Ludwig, the phrase is grammatically correct.
Frequent in
News & Media
50%
Science
30%
Encyclopedias
20%
Less common in
Formal & Business
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "ought to be kept" is a grammatically sound and commonly used expression to convey a recommendation or obligation for maintaining or preserving something. As verified by Ludwig, the phrase is appropriate for various contexts, particularly in news, scientific, and encyclopedic writing. While alternatives like "should be maintained" or "must be retained" might be more suitable depending on the desired tone, "ought to be kept" remains a valid choice. However, overuse can sound stilted, so consider more common alternatives for a contemporary writing style.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
should be maintained
Replaces "ought to" with the more common "should", indicating a recommendation rather than a strict obligation. It is a very similar phrase.
should be preserved
Focuses specifically on preservation, implying a need to protect something from decay or loss. It is useful if the emphasis is on conservation.
must be retained
Indicates a necessity to keep something, often for legal or procedural reasons. Emphasizes compliance.
needs to be conserved
Highlights the need for careful management and protection of a resource or item. Suitable for discussions about sustainability and preservation.
has to be secured
Stresses the importance of ensuring the safety or protection of something. Emphasizes security measures.
is required to be maintained
This formal construction indicates a mandatory requirement for upkeep or preservation, typically in regulated contexts.
is essential to safeguard
Highlights the crucial nature of protecting something. Conveys a sense of urgency and importance.
must be safeguarded
Emphasizes that protective measures are compulsory to ensure the well-being or integrity of something.
it is advisable to retain
Recommends keeping something without implying a strict obligation, suggesting prudence and foresight.
it would be prudent to preserve
Suggests that preserving something is a wise and cautious course of action, promoting long-term value.
FAQs
How can I use "ought to be kept" in a sentence?
The phrase "ought to be kept" is used to express a recommendation or obligation regarding the maintenance or preservation of something. For example: "The historical documents ought to be kept in a secure location."
What can I say instead of "ought to be kept"?
You can use alternatives like "should be maintained", "must be retained", or "needs to be conserved" depending on the context.
Is "ought to be kept" formal or informal?
"Ought to be kept" is considered more formal than alternatives like "should be kept" or "needs to be kept". Choose the phrasing that best suits the tone of your writing.
What is the difference between "ought to be kept" and "should be kept"?
While both express a recommendation, "ought to be kept" implies a stronger sense of moral obligation or duty than "should be kept". In many contexts, they are interchangeable, but "ought to" carries a slightly more formal and forceful tone.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested