鬱気 is read as うっき (ukki) and means gloomy.
うっき
ukki
きうつ
gloom
きうつしょう
depression
うっとうしい
gloomy (e.g. mood)
うつ
luxuriant (of vegetation)
ふんいき
(Earth's) atmosphere
しっけ
moisture
いやき
dislike
けいき
good (economic) times
かっき
energy
くうき
air
にんき
popularity
つよき
bullish