어로불변이 · 어로불변을
utter illiteracy, unable to tell similar letters apart
Example
어로불변이던 그가 지금은 책을 쓰는 작가가 되었어요.
He once couldn't tell one letter from another, but now he's an author.
Word parts
어 fish+로 Lu (state)+불 not+변 distinguish
Unable to tell apart two similar-looking characters, 'fish' and 'Lu'.
Related words