1) Cloud-covered 2) Clouded 3) Cloudy 4) Dark 5) Dismal 6) Gloomy 7) Lacking natural light 8) Lacking sun or sunlight 9) Like night 10) Like winter in antarctica 11) Overcast 1) Overcast 
[song cycle] Sunless (Без солнца, Bez Solntsa, literally Without Sun) is a song cycle by Modest Petrovich Mussorgsky, written in 1874, to poems by Arseny Golenishchev-Kutuzov, a relative of the composer. ==Song titles== The individual song titles are as follows: ==Commentary== ==Appearance in popular culture== ...
• (a.) Destitute or deprived of the sun or its rays; shaded; shadowed.
(from the article `Mussorgsky, Modest`) ...found a companion in the person of a distant relative, Arseny Golenishchev-Kutuzov. This impoverished 25-year-old poet inspired Mussorgsky`s two ...
Sun'less adjective Destitute or deprived of the sun or its rays; shaded; shadowed. « The sunken glen whose sunless shrubs must weep.» Byron. 
lacking sun or sunlight; dark: a sunless room. · dismal; gloomy; cheerless: a sunless smile.