'Glumness' definitions:

Definition of 'glumness'

From: WordNet
noun
An atmosphere of depression and melancholy; "gloom pervaded the office" [syn: gloom, gloominess, glumness]
noun
A gloomy ill-tempered feeling [syn: moroseness, glumness, sullenness]

Definition of 'Glumness'

From: GCIDE
  • Glumness \Glum"ness\, n. Moodiness; sullenness. [1913 Webster]