萎靡不振

You usually use it as an adjective to describe a person's state. You can say someone 显得 (appears) or 总是 (is always) 萎靡不振. It often follows a reason, like a breakup or a long work week. It sounds a bit more descriptive than just saying someone is 'sad'.

Use it when your friend looks like a zombie after a 12-hour shift. Use it when a sports team is losing and gives up. It is great for describing a gloomy office atmosphere. You can even use it to describe the economy if things are slow. It fits perfectly in novels or serious heart-to-heart chats.

Don't use it for a quick yawn or a five-minute nap. It implies a deeper, more lasting state of low energy. Avoid using it to describe a hyper child; it's the polar opposite. If someone is just physically sleepy, use 困 instead. This phrase is about the spirit, not just the eyes closing.

This phrase has deep roots in classical Chinese literature. It reflects the traditional value of 精气神 (spirit and vitality). In Chinese culture, showing a strong spirit is very important for success. Being 萎靡不振 was often seen as a sign of a failing state or character. Today, it's a common way to vent about modern burnout.

You might hear people just say 没精神 in very casual speech. Another similar one is 无精打采, which is slightly more common for daily tiredness. 萎靡不振 feels a bit more 'literary' and heavy. It carries more weight when you want to sound serious about your exhaustion.