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
as then required
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "as then required" is correct and usable in written English.
It can be used to indicate that something is needed or necessary at a specific time in the past. Example: "The documents were submitted as then required by the committee's guidelines."
✓ Grammatically correct
Academia
News & Media
Science
Wiki
Alternative expressions(15)
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
4 human-written examples
That copyright, however, was not renewed in 1966 or 1967 as then required by law in order to be maintained.
Academia
That copyright was not renewed in 1968 or 1969 as then required by law in order to be maintained.
Academia
It is in the public domain because the copyright was not renewed in 1976‑1977 as then required by law in order to be maintained: details here on the copyright law involved.
Academia
Fuchs was released on 23 June 1959, after serving nine years and four months of his sentence (as then required in England where long-term prisoners were entitled by law to one-third off for good behaviour in prison) at Wakefield Prison and promptly emigrated to the German Democratic Republic (East Germany).
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
Now, as then, requiring banks to dump their shareholdings altogether however laudable would run the risk of turning a bear market into a rout.Although today shareholdings remain huge compared with bank capital, the ratio is a third of the 150% of a decade ago.
News & Media
To deal with this problem, the bill looks back to the date of vesting; out of the group in whom rights vested on that date, it requires the further transfer or license to be signed by "the same number and proportion of the owners" (though not necessarily the same individuals) as were then required to terminate the grant under subsection (a).
Academia
In 1942, he and a brother, Baron, were pursued by authorities for failing to register as subversives, as the law then required.
News & Media
Economists of Joe's generation often did learn accounting as undergraduates it was often then required as part of an economics degree but very few of them ever integrated accounting concepts with their economics.
News & Media
An African-American seamstress from Montgomery, Alabama, she refused to give up her seat on a bus to a white person, as the rules then required.
News & Media
An aldehyde dehydrogenase such as Q9ZPB7 is then required to convert dihydroartemisinic aldehyde to dihydroartemisinic acid [ 24, 25].
Science
The most significant portion of this policy was that it classified ISPs as utility companies, which then required them to be subject to regulation to protect consumers.
News & Media
Expert writing Tips
Best practice
When using "as then required", ensure the context clearly establishes the specific time period you are referencing to avoid ambiguity.
Common error
Avoid using "as then required" without clearly specifying the time frame you're referring to. Without proper context, the reader may not understand when the requirement was in effect, leading to confusion.
Source & Trust
86%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "as then required" functions as an adverbial modifier, indicating a condition or requirement that was applicable at a specific time in the past. Ludwig shows that this phrase is commonly used to clarify past regulations, laws, or standards.
Frequent in
Academia
30%
News & Media
30%
Science
30%
Less common in
Wiki
10%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "as then required" is a grammatically correct adverbial phrase used to specify a condition or necessity in the past. Ludwig AI confirms its validity, although its frequency is relatively rare. The phrase is most commonly found in academic, news, and scientific contexts, indicating a formal register. To ensure clarity, always provide sufficient context when using this phrase to avoid ambiguity. Alternatives like "as was formerly necessary" can be used depending on the specific nuance you wish to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
as was formerly necessary
Emphasizes the past necessity more explicitly than "as then required".
as previously stipulated
Highlights that something was a condition or requirement in the past.
according to prior requirements
Directly indicates adherence to established rules or needs from the past.
as the rules dictated at the time
Focuses on how rules or laws necessitated certain actions in the past.
under the regulations in place then
Specifies that actions were governed by regulations that were effective at a particular time in the past.
as mandated by the law then
Highlights legal requirements at a specific point in the past.
as was the order of the day
Indicates a common practice or requirement in a particular historical context.
pursuant to the existing guidelines
Highlights that an action was taken following specific instructions at that time.
based on the prevailing standards
Suggests that past actions were in line with the standards that were in effect at that point.
as historically necessitated
Emphasizes that something was required because of past needs or conditions.
FAQs
How can I use "as then required" in a sentence?
Use "as then required" to specify that something was a requirement at a particular time in the past. For example, "The data was submitted as then required by the regulations."
What are some alternatives to using "as then required"?
You can use alternatives like "as was formerly necessary" or "according to prior requirements" depending on the context.
Is "as then required" formal or informal?
The phrase "as then required" is generally considered formal due to its precise and somewhat legalistic tone. It's suitable for academic, professional, or official contexts.
What's the difference between "as then required" and "as is now required"?
"As then required" refers to a past requirement, while "as is now required" refers to a current one. The choice depends on whether you're discussing past or present obligations.
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
4.1/5
Expert rating
Real-world application tested