/ˌɪlɪˈdʒɪbəl/ i-lɪ-JIB-əl

Definitions

1. adjective

Impossible to read or understand due to poor handwriting, poor printing, or other factors.

“The professor struggled to read the illegible handwriting on the old notes.”

2. noun

Something that is illegible.

“The illegible signature on the document caused problems.”