Illegible/ɪˈledʒəbl/ Definition 1 of 1Pro Tip 1/3Handwriting Context Often used to describe poor handwriting that's hard to interpret. The note was so rushed, it was completely illegible. Pro Tip 2/3Print Material Use it when print is unclear due to fading, smudging or poor quality. The old book's print has become illegible over time. Pro Tip 3/3Digital Texts Applies to text in digital form too, like blurry or pixelated images of text. The scanned copy is illegible on my screen.