不知死活
bùzhī-sǐhuó
reckless; heedless of danger
Every meaning
bùzhī-sǐhuó
- reckless; heedless of danger
Its characters
- 不bùnot; no
- 知zhīto know
- 死sǐto die
- 活huóto live; to be alive
Words with 不
Words with 知
Meanings from our own dictionary. Chengyu from the Xinhua idiom list, the most common first.