the.com/illiterate
Unable to read this very sentence, which is its own quiet tragedy.
means Unable to read or write, or more loosely, ignorant of a particular subject.
from From Latin illiteratus, literally not marked with letters — in being the negative prefix and littera meaning letter, the same root as literature.
Global countRoughly 750 million adults still can't read.
Loose usageNow means clueless about anything: financially, musically, emotionally.
Same rootShares littera with literal, literature, obliterate.