未知

wèizhī

adjective #5,717

Meanings

Literally 'not yet known' - something that remains to be discovered.

HSK 4

这种病的原因还是未知的。

Zhèzhǒng bìng de yuányīn háishì wèizhī de.

The cause of this disease is still unknown.

HSK 5

我们面对着许多未知的挑战。

Wǒmen miànduì zhe xǔduō wèizhī de tiǎozhàn.

We face many unknown challenges.

usage

未知 is more formal than 不知道. Used for abstract unknowns (未知数 = unknown variable), while 不知道 is for personal not-knowing.

未 wèi

知 zhī