gloom
1. [ noun ] a state of partial or total darkness
Synonyms: sombreness somberness
Examples:

"he struck a match to dispell the gloom"

Related terms: semidarkness
2. [ noun ] a feeling of melancholy apprehension
Synonyms: somberness gloominess
Related terms: apprehension melancholy
3. [ noun ] an atmosphere of depression and melancholy
Synonyms: glumness gloominess
Examples:

"gloom pervaded the office"

Related terms: atmosphere cloud bleakness
Similar spelling:   gloomy
  glom
  glioma
  glum
  gluon
  glume
  gleam