鬼鬼祟祟

guǐguǐsuìsuì
(idiom) sneaky; secretive; furtive

CEDICT

furtive; sneaking; stealthy

Wiktionary

行事不光明的样子。

重編國語辭典

行事不光明的样子

維基詞典

Entry Composition

1 鬼 guǐ
  1. disembodied spirit; ghost; devil
  2. (suffix) person with a certain vice or addiction etc
  3. sly; crafty; resourceful (variant of 诡 guǐ)
  4. one of the 28 constellations of ancient Chinese astronomy
2 鬼祟 guǐsuì
  1. evil spirit
  2. sneaky
  3. secretive
3 祟 suì evil spirit