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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
an additional
Grammar usage guide and real-world examplesUSAGE SUMMARY
"an additional" is correct and usable in written English.
You can use it when you want to emphasize that something has been added to a group or amount. For example: "There will be an additional fee for shipping."
✓ Grammatically correct
News & Media
Wiki
Science
Alternative expressions(20)
an additional year
an extra
a supplementary
a further
an added
a bonus
a complementary
an alternative
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
during the previous years
it is important to remember
to avoid disruption
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
59 human-written examples
"She's an additional resource".
News & Media
Here's an additional challenge.
News & Media
For an additional $30".
News & Media
That's an additional $930.
News & Media
There is an additional problem.
News & Media
This raises an additional point.
News & Media
"This is an additional test".
News & Media
There is an additional bonus.
News & Media
This was an additional surprise".
News & Media
Geography is an additional factor.
News & Media
This was an additional one.
News & Media
Expert writing Tips
Best practice
Use "an additional" to clearly indicate something is being added or included. Ensure the context makes it clear what is being added to.
Common error
Avoid using "a additional" instead of "an additional". Remember to use "an" before words that begin with a vowel sound.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "an additional" functions as a determiner followed by an adjective modifying a noun. It serves to specify that something is being added to or supplementing something else. Ludwig provides numerous examples demonstrating its use in various contexts.
Frequent in
News & Media
67%
Wiki
18%
Science
9%
Less common in
Formal & Business
3%
Encyclopedias
1%
Unknown
1%
Ludwig's WRAP-UP
In summary, "an additional" is a grammatically sound and widely used phrase to indicate something being added or supplementary. As Ludwig AI confirms, it is correct and usable in written English. With a very common frequency, it appears most often in news and media, but also across various platforms like wikis and scientific publications. When using "an additional", ensure you are clearly specifying what is being added and avoid the common mistake of using "a additional". Alternatives include "a supplementary" or "an extra", depending on the context. By understanding its proper usage and common errors, you can effectively incorporate "an additional" into your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a supplementary
Using "supplementary" emphasizes the supporting nature of the addition.
an extra
"Extra" suggests something beyond what is strictly necessary.
a further
"Further" implies an extension or continuation of something.
an added
"Added" is a more direct synonym, simply stating something was included.
a bonus
"Bonus" implies the addition is a benefit or reward.
a complementary
"Complementary" indicates the addition enhances or completes something else.
an accompanying
"Accompanying" suggests the addition is naturally paired with something.
a related
"Related" indicates the addition is connected or associated with something else.
an alternative
"Alternative" suggests the addition is a different option.
a peripheral
"Peripheral" suggests the addition is not essential, but still related.
FAQs
How can I use "an additional" in a sentence?
Use "an additional" to specify that something is being added to an existing amount or set. For example, "We need "an additional year" to complete the project".
What is a synonym for "an additional"?
You can use alternatives such as "an extra", "a supplementary", or "a further" depending on the specific nuance you want to convey.
Is it correct to say "a additional" instead of "an additional"?
No, it is incorrect. The correct form is "an additional" because "additional" begins with a vowel sound. Use "an" before vowel sounds and "a" before consonant sounds.
What's the difference between "additional" and "other"?
"Additional" specifies something is being added to what already exists, while "other" simply indicates something different or distinct. For example, "We need "an additional layer of protection"" means adding more protection, while "the other layer of protection" refers to a different existing layer.
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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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested