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
must be returned
Grammar usage guide and real-world examplesUSAGE SUMMARY
"must be returned" is correct and usable in written English.
You can use it when talking about something that needs to be returned to an owner or an authority. For example: All library books must be returned by the due date.
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(18)
has to be given back
needs to be restored
is required to be handed over
should be relinquished
is to be handed back
must be restored
must be reconsidered
must be relinquished
must be revisited
must be rehabilitated
must be repeated
must be reestablished
must be reported
must be relocated
must be overturned
the book needs to be returned
should be returned
needs to be returned
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
56 human-written examples
Police may seize property, though it must be returned.
News & Media
The nominating ballots must be returned by Jan . 17
News & Media
Ultimately, the water must be returned to the Pacific.
News & Media
What was taken by force must be returned by force".
News & Media
The car must be returned to the same location.
News & Media
The cancelled spectrum must be returned within four months, and then auctioned off.
News & Media
If the goose is to prosper, it must be returned to the wild.
News & Media
"All chequebooks and cards must be returned to the address above.
News & Media
But there are no one-way rentals; all vehicles must be returned to Alpine.
News & Media
Lomai has argued the men must be returned to Australia and compensated for their illegal detention.
News & Media
Federal dollars that go unspent for three years must be returned to the federal Treasury.
News & Media
Expert writing Tips
Best practice
When using "must be returned", ensure the context clearly indicates who is responsible for returning the item and to whom or where it should be returned. This clarifies the obligation and avoids ambiguity.
Common error
Avoid using "must be returned by itself" without specifying the subject. For example, instead of saying "The book must be returned", specify "The book must be returned by the student" to clarify who has the responsibility.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "must be returned" functions as a passive construction indicating obligation. The modal verb "must" expresses necessity, while "be returned" signifies the action being performed on the subject. As Ludwig AI confirms, this phrase is grammatically correct and widely used.
Frequent in
News & Media
45%
Science
25%
Formal & Business
15%
Less common in
Encyclopedias
5%
Wiki
5%
Social Media
5%
Ludwig's WRAP-UP
In summary, "must be returned" is a grammatically sound phrase used to express a strong obligation for something to be given back. Ludwig AI validates its correctness and common usage. Its frequency is very high, appearing primarily in news, media, science, and formal business contexts. While grammatically straightforward, ensuring clarity by specifying who is responsible for the action is crucial. Consider alternatives like "has to be given back" or "needs to be restored" depending on the desired nuance. The phrase is a key element in setting clear expectations and ensuring compliance across various settings.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
has to be given back
Emphasizes obligation using "has to", creating a slightly less formal tone than "must be returned".
needs to be restored
Focuses on the act of restoring something to its original condition rather than simply returning it.
is required to be handed over
Highlights the mandatory nature of the action, using a more formal and directive tone.
should be relinquished
Suggests a voluntary giving up of something, though often implying it's still required.
is to be handed back
Uses a more descriptive and less forceful expression of the return action.
is obliged to be restored
Similar to "must be returned" in expressing obligation but specifically focuses on restoration.
is due for restitution
Emphasizes the right or justice in something being returned, often after a loss or theft.
is slated for repatriation
Applies specifically to returning someone or something to their country of origin.
warrants retrieval
Implies that something deserves to be actively sought out and brought back.
demands repatriation
Conveys a strong insistence on something being returned to its country of origin, often due to legal or ethical reasons.
FAQs
How to use "must be returned" in a sentence?
Use "must be returned" to indicate an obligation or requirement for something to be given back. For example, "All library books "must be returned" by the end of the semester".
What can I say instead of "must be returned"?
You can use alternatives like "has to be given back", "needs to be restored", or "is required to be handed over" depending on the context.
Which is correct, "must be returned" or "should be returned"?
"Must be returned" indicates a stronger obligation than "should be returned". Use "must" when there is a firm requirement and "should" when it is a recommendation.
What's the difference between "must be returned" and "needs to be returned"?
"Must be returned" conveys a formal or legal obligation, while "needs to be returned" suggests a necessity but might not carry the same level of enforcement. "Needs to be returned" implies a requirement, while ""must be returned"" suggests a stronger, more binding obligation.
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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