Glumness

n.

1.

Moodiness; sullenness.

Noun	1.	glumness - an atmosphere of depression and melancholy; "gloom pervaded the office" Synonyms: gloominess, gloom
	2.	glumness - a gloomy ill-tempered feeling Synonyms: moroseness, sullenness

ambiance, ambience, atmosphere, bleakness, cloud, desolation, gloom, gloominess