灰頭土臉 [－头－脸]

Jyutping fui1 tau4 tou2 lim5
Pinyin huī tóu tǔ liǎn

Definitions (CC-CEDICT)
  1. head and face filthy with grime (idiom)
  2. covered in dirt
  3. dejected and depressed
Definitions (Wiktionary)
  1. phrase, idiomatic
    to look despondent; to look dejected