dark or dim; deeply shaded

gloomy skies.

causing gloom; dismal or depressing

a gloomy prospect.

filled with or showing gloom; sad, dejected, or melancholy.

hopeless or despairing; pessimistic

a gloomy view of the future.

adjective

bright , light , sunny , animated , cheerful , content , encouraged , happy , joyful , sparkling , vivacious , encouraging , exhilarating , uplifting

adjective

bleak , caliginous , cheerless , clouded , cloudy , crepuscular , desolate , dim , dismal , dreary , dull , dusky , forlorn , funereal , lightless , murky , obscure , overcast , overclouded , sepulchral , shadowy , somber , tenebrous , unilluminated , unlit , wintry , blue funk , broody , chapfallen , crabbed , crestfallen , dejected , depressed , despondent , disconsolate , dispirited , dour , downcast , downhearted , down in the dumps , down in the mouth * , dragged , glum , in low spirits , in the dumps , joyless , low , melancholy , mirthless , miserable , moody , moping , mopish , morose , mournful , oppressed , pessimistic , sad , saturnine , solemn , sulky , sullen , surly , ugly , unhappy , weary , woebegone , woeful , acheronian , acherontic , bad , black , cold , comfortless , depressive , discouraging , disheartening , dispiriting , drab , lugubrious , oppressive , saddening , tenebrific , blue , dark , sour , down , dysphoric , heavy-hearted , melancholic , spiritless , tristful , wistful , depressing , cimmerian , disheartened , drear , lowering , lurid , saddened , shaded , stygian