analfabetizado 34
It is not a widely used adjective, since there is a reduced form such as "illiterate" ("illiterate, who cannot read or write") which is much more common; although as a participle of a verb "to illiteracy" the case in which there is an intention to make someone ignorant, to make him illiterate is better interpreted. It is formed by the negative prefix an- literate ("participle of literate").