Gloomy/ˈɡluːmi/ Definition 1 of 2Pro Tip 1/3Mood Atmosphere Gloomy often suggests a heavy, depressed, or melancholic atmosphere. The news put a gloomy mood over the celebration. Pro Tip 2/3Hopelessness Sense Used to imply a lack of hope or enthusiasm, especially about the future. With the team losing by so much, the fans' spirits were gloomy. Pro Tip 3/3Emotional Weight Conveys emotional weight; may intensify the feeling of sadness or despair. She wandered through the halls with a gloomy expression.