This is the 1424th most frequent Chinese word.
不知
"Not know" or "unknowing."
Here, '不知' (do not know) conveys the speaker's confusion or uncertainty.
我不知如何是好。
I do not know what to do.
In this sentence, '不知' indicates the lack of knowledge about the subject's actions or timing.
他不知什么时候来了。
He came without me knowing when.
Here, '不知' represents a philosophical expression about the unpredictability of the future.