Gloomy Mood, Feeling Downcast, Gloom
noun
A gloomy energy has filled the room. This puts you in a gloomy mood. You are now feeling downcast. This word is formal, so you'll mostly just see it in literature.
うっき
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Careful of the shortening of 鬱 or you'll feel gloomy.
伯父は、鬱気で家でふさぎ込んでいる。
My uncle's been home feeling melancholy.
鬱気を吹き飛ばしてくれるような歌ですね。
This song can really blow the gloom away.
今日は鬱気が邪魔をして、日本語を勉強する気になれません。
My depression's bothering me today and I can't get myself to study Japanese.