illiterate
Definitions
Unable to read or write.
Having little or no education; unlettered.
Showing a lack of knowledge or competence in a particular subject or area.
Examples
The charity organization works to provide education to those who are functionally illiterate.
In the past, a large portion of the rural population remained illiterate due to a lack of access to schools.
Synonyms
uneducated unschooled unlettered ignorant untaught unlearned