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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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an well known

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "an well known" is not correct in written English.
It should be "a well known" because "well" begins with a consonant sound. Example: "He is a well known author in the literary community."

⚠ May contain grammatical issues

Science

News & Media

Wiki

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

2-Chlorocarbinol (CC-2) is a potential decontaminant of sulfur mustard (SM), an well known warfare agent.

Human-verified similar examples from authoritative sources

Similar Expressions

59 human-written examples

Consider a variant of a well known example.

Science

SEP

Variability of thermo-mechanical properties within a composite part is a well known issue.

The second is a well known model of a Boeing 767 aircraft at a flutter condition.

Use a well known dealer over a less well known one.

We propose a GP algorithm linked with Matlab/Simulink, a well known tool amongst control engineers.

PQ is an herbicide widely used in agriculture and a well known ROS-generating chemical.

It is a well known fact that it is a NP-hard problem [11].

Simulation (a pre-order) over Kripke structures is a well known formal verification technique.

A weighted least squares curves fitting method, based on a well known conformal mapping, is described.

It is a well known method to approximate the derivatives of a variable with small variations.

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Expert writing Tips

Best practice

Always use the article "a" before "well known" because "well" begins with a consonant sound. For example, use "a well-known author" instead of "an well known author".

Common error

Avoid using "an" before adjectives that start with a consonant sound. The correct usage depends on the sound, not the letter, of the following word. If the word starts with a vowel sound, use "an"; otherwise, use "a".

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

83%

Authority and reliability

1.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "an well known" attempts to function as a modifier, specifically an adjective phrase, to describe something as recognized or familiar. However, Ludwig AI indicates this phrasing is grammatically incorrect due to the misuse of the article "an" before a word beginning with a consonant sound.

Expression frequency: Rare

Frequent in

Science

50%

News & Media

25%

Wiki

25%

Less common in

Formal & Business

0%

Reference

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, the phrase "an well known" is grammatically incorrect because the article "an" should only be used before words that begin with a vowel sound. The correct form is "a well known". As Ludwig AI suggests, avoid using "an" before words starting with consonant sounds. While the phrase does appear in some sources, it's important to use the grammatically correct alternative for clarity and professionalism. The phrase is rare, and you should prefer alternatives like "widely recognized" or "commonly acknowledged".

FAQs

What's the correct way to say "well known"?

The correct phrase is "a well known". The article "a" is used because the adjective "well" begins with a consonant sound.

Is "an well known" grammatically correct?

No, "an well known" is grammatically incorrect. The article "an" is used before words that begin with a vowel sound, while "a" is used before words that begin with a consonant sound.

What are some alternatives to "a well known"?

You can use alternatives like "widely recognized", "commonly acknowledged", or "established" depending on the context.

How can I remember when to use "a" versus "an"?

Remember that "a" is used before words starting with a consonant sound, and "an" is used before words starting with a vowel sound. For example, "a well" versus "an apple".

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Source & Trust

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Authority and reliability

1.8/5

Expert rating

Real-world application tested

Most frequent sentences: