It is often used to describe handwriting that is messy, unclear, or written in a way that is difficult to decipher.
Here are some examples of how "illegible" can be used:
* "The doctor's handwriting was so illegible that I couldn't understand the prescription."
* "The ancient scroll was faded and illegible in many places."
* "The student's essay was full of grammatical errors and illegible writing."
Important Note: The word "illegible" is sometimes misspelled as "illegibile". However, the correct spelling is "illegible".