消沉 (xiāochén) is an HSK 7-9 Chinese word. Its most common English meaning is to sink into despondency; depending on context, it can also mean (of morale, willpower etc) to diminish or to plummet. Read the examples below to choose the meaning that fits the sentence.
01to sink into despondency
02(of morale, willpower etc) to diminish
03to plummet
02 · EXAMPLES
消沉
我一整天都觉得很消沉。Wǒ yì zhěng tiān dōu jué de hěn xiāo chén。