/ ɪˈlɪtərət; NAmE / adjective , noun
■ adjective
1.
( of a person ) not knowing how to read or write
OPP literate
2.
( of a document or letter ) badly written, as if by sb without much education
3.
(usually after a noun or adverb) not knowing very much about a particular subject area :
computer illiterate
musically illiterate
► il·lit·er·acy / ɪˈlɪtərəsi; NAmE / noun [ U ]
■ noun
a person who is illiterate
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WORD ORIGIN
late Middle English : from Latin illitteratus , from in- not + litteratus , from littera letter of the alphabet, (plural) epistle, literature, culture.