despondent       
adjective uk/dɪˈspɒn.dənt/ us/dɪˈspɑːn.dənt/
 郁闷的,沮丧的,消沉的
unhappy and with no hope or enthusiasm
  He became/grew increasingly despondent when she failed to return his phone calls. 她没给他回电话让他感到越来越郁闷。 
 She started to feel despondent about ever finding a job. 她开始对找到工作感到气馁了。