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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
an common
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "an common" is not correct in written English.
The correct article to use before "common" is "a" because "common" begins with a consonant sound. Example: "It is a common misconception that all swans are white."
⚠ May contain grammatical issues
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
8 human-written examples
We are using a Corona/Core architecture, where each block has an common interface known as the Corona, and one or more implementations, known as the Cores.
In an common moment of eccentricity, Higgins bought the entire 1939 crop of mahogany from the Philippines and stored it on his own.
Academia
Dominic Grieve described as an "common sense" a suggestion by the MPs and peers that privacy injunctions should routinely be served on internet companies, as well as newspapers and broadcasters.
News & Media
The results obtained were compared with those achieved by manual and automated batch procedures and flow manifolds with different cells: an common quartz flow cell, a helix cell and the most used spiral cell.
Science
The current article is, however, based on observations by experts that people confuse technologies due to an (common) absence of knowledge (Nap et al. 2002; van Dam and de Vriend 2002), rather than not accept them.
Specifically, an common coding variant, rs10516487 (R61H), was shown to confer a strong protective effect against the disease and was then replicated in the same study in separate South American and European cohorts of patients with SLE.
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
A common threat demands a common response.
News & Media
A good team has a common goal.
Wiki
A common ground.
News & Media
A common error.
News & Media
A common refrain.
News & Media
Expert writing Tips
Best practice
Always use the article "a" before words that begin with a consonant sound, such as "common". Remember that it's about the sound, not just the letter, so be mindful of silent letters or unusual pronunciations.
Common error
Don't assume that all words starting with consonants require the article "an". It’s the sound that matters. For example, "an hour" is correct because "hour" begins with a vowel sound, despite starting with the consonant "h". Similarly, avoid using "an" before acronyms that start with a consonant sound, such as "a URL".
Source & Trust
60%
Authority and reliability
1.2/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "an common" is a grammatical error resulting from the incorrect use of the indefinite article. The indefinite article "an" is used before words that begin with a vowel sound, while the article "a" is used before words that begin with a consonant sound. Ludwig AI indicates that this phrase is incorrect.
Frequent in
Science
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News & Media
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Formal & Business
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Less common in
Science
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News & Media
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Formal & Business
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Ludwig's WRAP-UP
The phrase "an common" is a grammatical error due to the incorrect use of the indefinite article "an" before the word "common", which starts with a consonant sound. As Ludwig AI states, the correct article is "a", making "a common" the accurate phrase. This error is not found in authoritative sources, emphasizing the importance of using "a" before consonant sounds and "an" before vowel sounds. Remember, it’s the sound, not the letter, that dictates the choice of article. Correcting such errors enhances clarity and credibility in writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a common
Corrects the grammatical error by using the appropriate article "a" before the consonant sound of "common".
a typical
Replaces "common" with a synonym that implies something is usual or expected.
a usual
Replaces "common" with a synonym indicating something that happens regularly or is normally the case.
a frequent
Replaces "common" with a synonym emphasizing the occurrence of something at short intervals.
a prevalent
Replaces "common" with a synonym stressing widespread existence or acceptance.
a widespread
Replaces "common" with a synonym emphasizing the broad extent or range of something.
a general
Replaces "common" with a synonym suggesting something is applicable or affects many people or things.
a shared
Implies something is held or experienced jointly, shifting the focus from frequency to joint possession.
a mutual
Suggests something is felt or done by each of two or more parties toward the other(s).
a joint
Implies something is done by two or more people or organizations together.
FAQs
Why is "an common" grammatically incorrect?
The phrase "an common" is incorrect because the article "an" is used before words starting with a vowel sound, not just a vowel. Since "common" starts with a consonant sound, the correct article is "a", making /s/a+common a common the right choice.
What's the rule for using "a" versus "an"?
Use "a" before words starting with a consonant sound (e.g., a car, a university—because "university" starts with the consonant sound /ju:/). Use "an" before words starting with a vowel sound (e.g., an apple, an hour—because "hour" starts with the vowel sound /aʊ/). It's about the sound, not the letter itself.
What are some correct examples using the word "common"?
Here are a few examples: "It's "a common practice"", "That's "a common mistake"", or "He has "a common sense"". The article "a" is correctly used before the word "common" because it begins with a consonant sound.
Are there exceptions to the "a" vs "an" rule?
Yes, the primary exception revolves around pronunciation. Words like "hour" or "honest" use "an" because their initial consonant is silent, resulting in a vowel sound at the start. Similarly, acronyms are pronounced based on their initial sound (e.g., "an MBA" vs "a CPA").
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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
1.2/5
Expert rating
Real-world application tested