神不知鬼不觉
shénbùzhīguǐbùjuéTraditional 神不知鬼不覺
without anyone knowing; secretly
Every meaning
shénbùzhīguǐbùjué
- without anyone knowing; secretly
Its characters
Words with 神
Words with 不
Meanings from our own dictionary. Chengyu from the Xinhua idiom list, the most common first.