An illiterate person is someone who is unable to read and write.

Literacy generally encompasses the ability to use language proficiently, including understanding, evaluating, using, and engaging with written text. Illiteracy, therefore, signifies a lack of these foundational skills.

Different types of illiteracy exist:

• Functional illiteracy: Refers to the inability to use reading, writing, and calculation skills for everyday purposes.
• Complete illiteracy: The inability to read or write at all.