1. unable to read or write
2. lacking knowledge or understanding in a particular subject

1. a person who cannot read or write

Examples

• Many adults in the region remain illiterate due to lack of educational opportunities.
• The literacy program helps illiterate adults learn basic reading skills.
• He was computer illiterate and needed help using email.
• The survey revealed that 15% of the population was functionally illiterate.
• She felt scientifically illiterate when discussing climate change.
• The charity works with illiterates in rural communities.
• Despite being illiterate, he was very intelligent and successful in business.