dismal
black, bleak, cheerless, dark, depressing, despondent, discouraging, dolorous, dreary, forlorn, funereal, gloomy, gruesome, lonesome, louring or lowering, lugubrious, melancholy, sad, sombre, sorrowful, wretched
Antonyms
bright, cheerful, cheery, glad, happy, joyful, light-hearted, sunny