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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
as and when needed
Grammar usage guide and real-world examplesUSAGE SUMMARY
"as and when needed" is correct and usable in written English.
You can use it anytime you want to express that something is done only when it is required. For example: "Come to the office as and when needed."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(20)
is equivalent to
in the wishes of
rapidly thereafter
for the immediate future
Very soon
somewhere later
one week before
at the early time
in the next weeks
it is important to remember
during the previous years
to avoid disruption
not yet completed
in accordance with direction from
a couple of books before
if not soon
as excellent as
in a flash
as instructed by the directive
as tall as
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
A houseparent lives in their own cabin nearby, hands-off, but there as and when needed.
News & Media
You could buy an annuity to meet the bills and leave the rest invested, taking lump sums as and when needed.
News & Media
Further success came from hiring a consultant, paid for as and when needed, to bring specific knowledge of the sector to the business.
News & Media
But how best to go about this: one big sanctions-busting resolution (as Mr Bush would prefer), or several smaller ones, as and when needed?In this section And they're off Ciao, Saudi Phew They fought Franco, in Abe's name Blame, aim, fire Crackdown time.
News & Media
So, in other words, its vetted talent can become paid vetters to help it scale the size of the marketplace, as and when needed.
News & Media
"Things have to develop and we have to be able to respond before it becomes too late". The officers were also asked when weapons should be available to officers, with 16.8% saying firearms should be made "available to all, as and when needed".
News & Media
The EDP forum meets as and when needed.
Science
In the next section we focus on the less formal, responsive, form of PPI in which researchers 'reach out' for specific PPI input as and when needed.
Science
Similarly, biotechnology-based point-of-care diagnostics, which allow diagnostic services to be brought to women's doorsteps, should be made widely available as it facilitates access to health care, as and when needed.
The user must have a convenient way to cash-out as and when needed.
News & Media
"I will continue to look after the McCann's interests as and when needed," he said.
News & Media
Expert writing Tips
Best practice
Use "as and when needed" to clearly indicate that a resource, action, or support is available only when a specific requirement arises. This avoids unnecessary deployment or expenditure.
Common error
Avoid using "as and when needed" excessively in a single text, as it can make your writing sound repetitive. Consider alternative phrasing or re-structuring the sentence for better flow.
Source & Trust
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "as and when needed" functions as an adverbial phrase modifying a verb, adjective, or another adverb. It specifies the timing or condition under which an action or provision occurs, as confirmed by Ludwig, which states it "is correct and usable in written English" to express something done only when required.
Frequent in
News & Media
33%
Science
31%
Formal & Business
17%
Less common in
Wiki
5%
Academia
2%
Reference
0%
Ludwig's WRAP-UP
The phrase "as and when needed" is a versatile and common expression used to indicate that something should only be provided or done when it is necessary. Ludwig AI confirms its correctness in written English. Examples gathered by Ludwig show its prevalence across varied contexts, including news, science, and business. While considered neutral to professional in tone, it’s important to avoid overuse to maintain writing clarity. Alternatives like "as and when required" or "only when necessary" can offer subtle variations in formality and emphasis. This phrase is useful for efficiently managing resources, as resources are only expended if required, and making intentions clear for the audience.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
as and when required
Replaces "needed" with "required", emphasizing a more formal or mandatory aspect.
as and when necessary
Substitutes "needed" with "necessary", conveying a sense of essentiality.
when the need arises
Uses a more concise and direct structure, focusing on the emergence of a need.
only when necessary
Emphasizes the condition of necessity as the sole trigger for action.
on an as-needed basis
Turns the phrase into an adverbial phrase, highlighting the frequency or method of application.
if and when the situation demands
Introduces a conditional element, stressing the situational dependence of the action.
as the occasion requires
Shifts focus to the "occasion" as the determinant for action.
contingent on demand
Highlights the link to a specific demand that arises.
subject to availability
Emphasizes that something is provided depending on if it is available
depending on circumstances
Emphasizes that something is provided or done depending on the circumstances that might arise.
FAQs
How can I use "as and when needed" in a sentence?
Use "as and when needed" to indicate that something is only provided or done when it is required. For example, "Specialist support will be brought in "as and when needed"".
What is a synonym for "as and when needed"?
Synonyms for "as and when needed" include "as and when required", "only when necessary", or "on an as-needed basis", depending on the context.
Is there a more formal alternative to "as and when needed"?
A more formal alternative to "as and when needed" is "as and when required". This phrasing is suitable for official documents or professional communications.
What's the difference between "as needed" and "as and when needed"?
While both phrases indicate something is provided only when necessary, "as and when needed" often implies a more immediate or responsive availability compared to the more general "as needed".
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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
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested