Gloomy or dismal; having a melancholic, depressing atmosphere or mood.
今日はずっと陰気な天気で気分が落ち込む。
It's been gloomy weather all day and my mood is down.
彼は最近陰気な顔をしていることが多い。
He has often been wearing a gloomy expression lately.
古い屋敷は薄暗く、陰気な雰囲気が漂っていた。
The old mansion was dim and had a dismal atmosphere.
The 'yin' aspect in yin–yang theory; the concept of yin energy (as opposed to yang).
伝統医学では陰気と陽気のバランスが健康に重要だとされる。
In traditional medicine, the balance between yin and yang energies is considered important for health.