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
required
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word "required" is correct and usable in written English.
You can use it to describe something that is necessary or must be done. For example: "Attendance at all meetings is required."
✓ Grammatically correct
News & Media
Formal & Business
Science
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
60 human-written examples
At the time, players were allowed, but not required, to wear helmets, and most players chose to go helmet-less, despite the risk of severe head trauma.
News & Media
It increased tobacco taxes, implemented a smoking ban in all enclosed public places and workplaces, required labels to have graphic warnings covering at least 65% of the pack and provided services to help people quit.
News & Media
The CDC will be required to put poverty alleviation at the heart of its operations.
News & Media
He was also required to pay a £52 victim surcharge.
News & Media
As a result, aid agencies such as Unicef have forged links with foreign producers better able to produce these supplies at the scale, cost and quality required.
News & Media
" The judge told Wright he was required by the Criminal Justice Act 2003 to determine whether life imprisonment, the only sentence for murder, should mean life or whether he should fix a minimum term.
News & Media
"It required a heart-stopping flight from Kinshasa to the regional capital of Kisangani, then 350km down a jarring, one-rut bicycle path on the back of a motorcycle.
News & Media
Prof Cooper said organisations need to assess whether board members are providing the required "added value" and look at whether the nature of the role has changed.
News & Media
"Co-operation is required from all sides so that the cash flow problem is confronted," he said.
News & Media
As a result, when it comes to leaving campus accommodation after the first year, students are often required to provide guarantors when applying for a tenancy.
News & Media
The Lufthansa chief executive, Carsten Spohr, said Lubitz had passed all the psychological tests required for training and undergone regular physical examinations.
News & Media
Expert writing Tips
Best practice
Use "required" to clearly state obligations, necessities, or mandates in formal and professional writing. For instance, specify "Attendance is required" rather than "Attendance is suggested" to ensure clarity and avoid ambiguity.
Common error
While "required" is suitable for formal settings, avoid overusing it in informal conversations or casual writing. Opt for alternatives like "needed" or "necessary" to maintain a more relaxed tone and avoid sounding overly authoritative.
Source & Trust
93%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The word "required" primarily functions as an adjective modifying nouns to indicate necessity or obligation. It can also appear as the past participle of the verb "require", used in passive constructions. Ludwig confirms its correct and frequent usage in various contexts.
Frequent in
News & Media
39%
Formal & Business
30%
Science
31%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "required" is a versatile word primarily functioning as an adjective or past participle, used to indicate necessity or obligation. As highlighted by Ludwig, it is grammatically sound and frequently employed across various contexts. Predominantly found in news media, formal business settings, and scientific writing, "required" maintains a neutral to formal register. When choosing alternatives, consider the nuance each offers to ensure the most appropriate expression of necessity. Proper usage guidelines advise balancing its use in formal contexts while avoiding overuse in informal settings. Therefore, "required" is a valuable asset in expressing mandates and obligations with clarity and precision.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
necessary
Emphasizes the condition of being essential or indispensable.
mandatory
Highlights the characteristic of being compulsory or obligatory.
obligatory
Focuses on the binding nature of a duty or requirement.
compulsory
Stresses the aspect of being enforced or demanded.
essential
Indicates the importance of being absolutely necessary.
needed
Highlights a demand or lack that must be fulfilled.
requisite
Points to something that is needed or appropriate for a specific purpose.
indispensable
Emphasizes the impossibility of doing without something.
unavoidable
Focuses on the certainty of something happening or being needed.
crucial
Stresses the critical importance of something.
FAQs
How can I use "required" in a sentence?
What are some alternatives to "required"?
Some alternatives to "required" include "necessary", "mandatory", "obligatory", "essential", and "needed". The best choice depends on the specific context.
Which is correct, "required" or "is required"?
What's the difference between "required" and "requested"?
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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
93%
Authority and reliability
4.8/5
Expert rating
Real-world application tested