noun, plural il·lit·er·a·cies for 3.

a lack of ability to read and write.
the state of being illiterate; lack of any or enough education.
a mistake in writing or speaking, felt to be characteristic of an illiterate or semiliterate person: a letter that was full of illiteracies.

Origin of illiteracy

First recorded in 1650–60; illiter(ate) + -acy
Related formssem·i-il·lit·er·a·cy, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for illiteracy

Contemporary Examples of illiteracy

Historical Examples of illiteracy

Word Origin and History for illiteracy

1650s, from illiterate + -cy. Earlier in this sense was illiterature (1590s).

Online Etymology Dictionary, © 2010 Douglas Harper