灰不溜丢 huī bu liū diū

DEFINITIONS

  1. gloomy and dull (idiom)
  2. boring and gray
  3. unpleasantly murky

CHARACTERS

灰 huī ashes; dust; lime, mortar
不 bu no, not; un-; negative prefix
溜 liū slide, glide, slip; slippery
丢 diū discard