as when required

USAGE SUMMARY

"as when required" is correct and can be used in written English.
It is used to describe a situation in which an action must take place when it is necessary. For example, you might say, “Please sign the documents as when required.”.

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

The fingers of the other hand were used to support the subjects' jaws as well as when required for the retraction of the checks and tongue to allow access to the teeth surfaces.

BMC Oral Health

Human-verified similar examples from authoritative sources

Similar Expressions

59 human-written examples

Pros: Flexibility and access to lump sums as and when required.

The Guardian - Money

The nominations committee meets as and when required and comprises the chair, the editor-in-chief of the Guardian and two independent directors.

The Guardian

The plants were irrigated with tap water as and when required.

International Journal of Recycling of Organic Waste in Agriculture

It's about being able to respond as and when required.

BBC

What's happening to the mature women who are, as Miss Jean Brodie would have said, 'in their prime'?" Though both Barnsley, who is 59, and Rebuck, 61, could be as tough as anyone when required, they have been author-centred.

The Guardian - Books

Need for retreatment and drug switch was determined by the treating physician (IC, EA, EB, IH) based on assessment of disease activity according to VA, ophthalmoscopy, and OCT, as well as FA when required.

BMC Ophthalmology

A "hands-on workshop" in clinical empathy can include reflection and creative elements such as photography and role play as well as theoretical background when required.

BMC Medical Education

Therefore, Dm-T-32 and Rs-T-42 lines were used as positive control in the experiment as and when required.

Rice

While miniaturised, Harding is transported in Unwin's specially-adapted briefcase, which is fitted with equipment such as a periscope, stores other gadgets as and when required, and can open from the inside.

Wikipedia

A copy of a staff contract seen by the Guardian, dated 2009, says: "Your hours of work will be advised by the visitor manager and will be dependent upon the requirements for retail assistants at Buckingham Palace as and when required.

The Guardian - Money

Expert writing Tips

Best practice

Use "as when required" to indicate that an action or resource should be utilized only when a specific need or situation arises, avoiding unnecessary or premature deployment.

Common error

While "as when required" is a perfectly acceptable phrase, avoid overusing it in your writing. Sometimes simpler phrasing like "when needed" or "only if necessary" can make your writing more concise and direct.

Linguistic Context

The phrase "as when required" functions as an adverbial phrase, modifying a verb to specify the timing or condition under which an action should occur. This is supported by Ludwig, which indicates the correctness and usability of the phrase.

Expression frequency: Very common

Frequent in

Science

34%

News & Media

40%

Formal & Business

16%

Less common in

Wiki

4%

Encyclopedias

1%

Reference

5%

Ludwig's WRAP-UP

In summary, the phrase "as when required" is a grammatically sound and frequently used adverbial phrase that serves to establish a contingency, dictating that an action should only occur in response to a specific need or set of conditions. Ludwig AI confirms its correctness and general usability. It is common across scientific, news, and formal business contexts, maintaining a somewhat neutral register. Consider alternatives like "when needed" or "only if necessary" for conciseness, and avoid overuse. The examples provided by Ludwig highlight the phrase's versatility and contextual relevance in various domains.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

only when necessary

Focuses on avoiding unnecessary action.

when the need arises

Emphasizes the emergence of a need as the trigger for action.

if and when needed

Adds a conditional aspect, suggesting it may not always be required.

as the situation demands

Highlights the circumstances dictating the timing of action.

on an as-needed basis

Formal phrasing which signifies availability when required.

as deemed appropriate

Refers to an evaluation that something must be done because it is appropiate.

when circumstances dictate

Emphasizes external conditions controlling when something happens.

if the occasion arises

Emphasizes if an occasion or specific situation necessitates an action.

subject to availability

Highlights that something is only available if circumstances allow.

upon request

Highlights that a service is only carried out when someone asks for it.

FAQs

How can I use "as when required" in a sentence?

You can use "as when required" to indicate that something should only be done if it is necessary. For example, "Specialist knowledge will be brought in "as and when required"".

What's the difference between "as when required" and "when necessary"?

"As when required" and "when necessary" are very similar, but "as when required" often implies that there's a specific set of requirements or conditions that trigger the action, while "when necessary" is more general. For example, it is more appropriate to say "use the fire extinguisher only when necessary" than "use the fire extinguisher only as when required".

Which is more formal, "as when required" or "as needed"?

"As when required" is generally considered more formal than "as needed". "As needed" is a more common and informal alternative to "as when required".

Are "as when required" and "as and when required" interchangeable?

Yes, "as when required" and ""as and when required"" are largely interchangeable. The latter is slightly more emphatic but carries the same core meaning.