This is the 6385th most frequent Korean word.
않은데
"않은데" means "but not" or "however not," depending on context.
In this sentence, '않은데' is used to contrast the dislike of soccer with the liking of other sports.
나는 축구를 좋아하지 않은데 다른 스포츠는 좋아해요.
I don't like soccer, but I like other sports.
Here, '않은데' highlights the unresolved status of the problem and creates a connection with the lack of explanation.
그는 문제를 해결하지 않은데 이유를 말하지 않아요.
He hasn't solved the issue, yet he doesn't explain the reason.
In this example, '않은데' expresses a drawback about the book and adds context to the difficulty in reading it.