Gloom
Part of speech: noun
Definition: darkness, dimness or obscurity a melancholy, depressing or despondent atmosphere
Part of speech: verb
Definition: To be dark or gloomy. to look or feel sad, sullen or despondent.
Example sentence: I don't want to paint a picture of total gloom and doom.
Somberness
Part of speech: noun
Definition: The state or quality of being somber.