Glum
glum /glʌm/
adj. 闷闷不乐的，阴沉的，忧郁的
It means that someone is sad and quiet because he/she is disappointed or unhappy about something.
它指的是某人因对某事感到失望或不高兴而悲伤安静。
What happened? He looks glum the whole morning.
发生什么事了?他一整个上午都看起来闷闷不乐的。
Her glum face gave me the answer.
她忧郁的脸给了我答案。
