The state of being illiterate, or uneducated; lack of learning, or knowledge; ignorance; specifically, inability to read and write; as, the illiteracy shown by the last census. [1913 Webster]
An instance of ignorance; a literary blunder. [1913 Webster]
"The many blunders and illiteracies of the first publishers of his [Shakespeare's] works."
[1913 Webster]