gloomy

adjective
gloomy \ ˈglü-mē \
1588{ds||1|a|}
  • partially or totally dark; especially : dismally and depressingly dark
  • having a frowning or scowling appearance : forbidding
  • low in spirits : melancholy

Gloomy Gus

noun
Gloomy Gus \ -ˈgəs \
1904
  • a person who is habitually gloomy
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