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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
is illegible
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is illegible" is correct and usable in written English.
You can use it to describe text that cannot be read due to poor handwriting, damage, or other factors affecting visibility. Example: "The note left on the table is illegible, and I can't make out what it says."
✓ Grammatically correct
News & Media
Academia
Wiki
Alternative expressions(5)
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
38 human-written examples
(The Aja sign is illegible at highway speed).
News & Media
Unfortunately, it is illegible to everyone, including Queequeg himself.
News & Media
The detail of his alleged crime is illegible to all but the cognoscenti.
News & Media
The new signature is illegible, but it looks like a traditional signature.
News & Media
Some of my friends say that my handwriting is illegible, but they are wrong.
News & Media
Statement of responsibility in bottom left corner of chart #1 is illegible.
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
21 human-written examples
The words were illegible.
News & Media
Some entries are illegible.
Academia
But the license plate was illegible.
News & Media
To say it was illegible would be a compliment.
News & Media
The volumes are illegible in places.
Academia
Expert writing Tips
Best practice
When describing handwriting, specify the cause of illegibility, such as "due to poor penmanship" or "because of smudging".
Common error
Don't simply state that something "is illegible"; explain why. For example, instead of saying "the writing is illegible", say "the writing is illegible due to water damage".
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is illegible" functions as an adjectival phrase, modifying a noun to describe its state of being unreadable. Ludwig indicates its common use in describing text that cannot be easily deciphered due to various reasons.
Frequent in
News & Media
60%
Academia
20%
Wiki
10%
Less common in
Science
5%
Formal & Business
3%
Encyclopedias
2%
Ludwig's WRAP-UP
In summary, the phrase "is illegible" is a common and grammatically correct way to describe something that cannot be read, often due to poor handwriting, damage, or other factors affecting its visibility. Ludwig confirms its acceptability and common use across diverse contexts, including news media, academic writing, and general communication. While alternatives like "is unreadable" or "cannot be read" exist, "is illegible" remains a clear and effective choice. Remember to provide context explaining why something is illegible for clarity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
cannot be read
Focuses on the inability to decipher the text.
is unreadable
Direct synonym emphasizing the inability to read the text.
is indecipherable
Highlights the difficulty in decoding the message.
is unclear
A broader term suggesting a lack of clarity, not specifically about readability.
is obscure
Suggests the text is hidden or not easily accessible to understanding.
is unintelligible
Indicates the text lacks coherent meaning.
is indiscernible
Emphasizes the inability to distinguish or make out the letters or words.
is beyond comprehension
Suggests the text is not only unreadable but also impossible to understand.
is virtually impossible to read
Emphasizes the extreme difficulty in reading the text.
defies interpretation
Highlights the challenge in finding any meaning or interpretation.
FAQs
How can I use "is illegible" in a sentence?
You can use "is illegible" to describe text that cannot be read. For example, "The signature on the document "is illegible"".
What are some alternatives to "is illegible"?
Alternatives include "is unreadable", "cannot be read", or "is indecipherable", depending on the specific nuance you want to convey.
Is it better to say "is illegible" or "is unreadable"?
"Is illegible" and "is unreadable" are largely interchangeable. "Is illegible" often implies a difficulty in deciphering due to handwriting or damage, while "is unreadable" is a more general term.
What does it mean when a document is described as "is illegible"?
When a document "is illegible", it means the text on the document cannot be read or deciphered, often due to poor handwriting, damage, or fading ink.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested