glum          
adjective  informal uk/ɡlʌm/ us/ɡlʌm/ glummer | glummest
 沮丧的,闷闷不乐的,愁闷的
disappointed or unhappy, and quiet
  You look glum. What's up? 你看上去闷闷不乐的,怎么了? 
 He's very glum about the company's prospects. 他对公司的前景感到很不乐观。 
  阴郁的,死气沉沉的
If a place is glum, it is not attractive and has nothing that causes pleasure.
  They live in one glum little room. 他们住在一间死气沉沉的小房间里。