Related Clues:

• Completely dark
• Like the inside of a closed refrigerator
• Indefinite
• Like a darkened room
• Dark and gloomy of manner
• Grave and serious
• Gloomy and dismal
• Solemn and grave
• Grave or gloomy
• Gloomy and dark
• One may be in the dark until it's like this
• Can't make light of it
• Nothing light about this
• Like this until the lights go on
• Like rooms not in use, often