This is the 4397th most frequent Korean word.
하나도
"하나도" means "not even one" or "none at all."
In this sentence, '하나도' emphasizes that the speaker does not know even a single thing about the topic or question, providing a sense of total absence.
하나도 모르는 문제가 나왔어요.
A question I don't know at all came up.
Here, '하나도' indicates that nothing was left, emphasizing complete consumption or action.
케이크가 너무 맛있어서 하나도 남기지 않았어요.
The cake was so delicious that I didn't leave even a single piece.
In this context, '하나도' is used to stress the complete lack of enjoyment or entertainment in the movie.