unlegible
/ʌnˈlɛdʒəbəl/Definitions
1. adjective
difficult to read; having writing that is hard to decipher
“The handwriting in the ancient manuscript was almost unlegible.”
2. noun
something that is difficult to read; a passage of writing that is hard to decipher
“The unlegible text on the worn-out sign made it hard to understand the directions.”