languid 精神不振的 sluggish, listless  (langu松弛+id)
downcast 沮丧的 depressed, dejected
The downcast student couldn't believe that  he'd failed the test.
dismal 沮丧的 gloomy, somber
Mary cried during the dismal movie.
dejected 失望的 沮丧的 depressed,  dispirited
depress 使沮丧 deject, dispirit
He was depressed because he had not passed  his examinations.
depression 沮丧
He committed suicide during a fit(发作) of  depression.
dampen 使沮丧 dismay, depress
I don't want to dampen your enthusiasm, but  take it easy!
cheerless 不愉快的 阴郁的