1. in a way that cannot be read or deciphered

Examples

• The doctor wrote the prescription so illegibly that the pharmacist couldn’t read it.
• Her handwriting was so messy that she had written her name illegibly on the form.
• The old sign was painted illegibly due to years of weather damage.
• He scribbled his notes illegibly during the fast-paced lecture.
• The address was written illegibly on the envelope, causing delivery delays.
• The contract was signed illegibly, making it difficult to verify the signature.