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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
an sum of
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "an sum of" is not correct in written English.
The correct form should be "a sum of" as "sum" begins with a consonant sound. Example: "The total cost is a sum of all the expenses incurred during the project."
⚠ May contain grammatical issues
Science
News & Media
Formal & Business
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
Our valuation is based on a sum-of-the-parts.
News & Media
Our data permitted a sum-of-all-the-parts analysis.
Science
GM is a sum-of-its-parts story.
News & Media
Results were compared by a sum-of-squares F test.
He was owed, by somebody: an apology, a sum of money, carte blanche.
News & Media
The agreement came three months after an accord on a sum of $5 billion was reached.
News & Media
In my case, a picture is a sum of destructions.
News & Media
"With housing benefit there is a guarantee of a sum of money coming through.
News & Media
I rent a garage for a sum of money that makes my eyeballs bleed.
News & Media
You're the end of a precise equation, a sum of the value of other parts.
News & Media
A movie is a sum of compromises until you grow into your own independence.
News & Media
Expert writing Tips
Best practice
Always use "a sum of" instead of "an sum of". The article 'a' is appropriate before words beginning with a consonant sound.
Common error
Avoid using "an" before words that start with a consonant sound. The correct usage is "a sum of", not "an sum of". Remember, "an" is generally used before vowel sounds.
Source & Trust
60%
Authority and reliability
1.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "an sum of" is grammatically incorrect. The function of the corrected phrase, "a sum of", is to denote a total or aggregate resulting from the addition of two or more numbers or items. Ludwig AI indicates the correct form is "a sum of."
Frequent in
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Ludwig's WRAP-UP
The phrase "an sum of" is grammatically incorrect; the correct form is "a sum of". As Ludwig AI points out, the indefinite article "a" should precede words beginning with a consonant sound, such as "sum". This phrase serves to indicate a total amount resulting from the addition of elements. Due to its incorrect grammar, examples are absent from the analyzed data, highlighting the importance of using the correct article. Alternatives such as "a total of" and "an amount of" can be used for similar meanings. Always ensure proper article usage for clarity and grammatical accuracy.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a total of
Replaces "sum" with "total", correcting the article usage.
a quantity of
Substitutes "sum" with "quantity", emphasizing the amount.
an amount of
Uses "amount" instead of "sum", which is grammatically correct.
a collection of
Focuses on the idea of gathering or accumulating items.
an aggregate of
Replaces "sum" with "aggregate", giving a more formal tone.
a compilation of
Suggests a gathering of information or data.
a body of
Implies a substantial collection of something.
a mass of
Indicates a large, often undefined, amount.
a combination of
Highlights the merging or adding together of different elements.
a result of
Focuses on the outcome of an addition or calculation.
FAQs
What is the correct way to say "an sum of"?
The correct way to say it is "a sum of". The article "a" is used before words that begin with a consonant sound.
Is "an sum of" grammatically correct?
No, "an sum of" is grammatically incorrect. The indefinite article "an" is used before words that begin with a vowel sound, whereas "sum" begins with a consonant sound, so the correct article is "a".
What can I say instead of "an sum of"?
Since "an sum of" is incorrect, you should use "a sum of". Alternatives include "a total of" or "an amount of" if you need to start with a vowel sound.
What's the difference between "an sum of" and "a sum of"?
"An sum of" is grammatically incorrect. The correct phrase is "a sum of", where the indefinite article "a" is used because "sum" begins with a consonant sound.
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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
60%
Authority and reliability
1.5/5
Expert rating
Real-world application tested