sullen

Synonyms

black, bleak, cheerless, chill, cloudy, cold, comfortless, dark, darkening, depressing, depressive, desolate, dire, disconsolate, dismal, drear, dreary, elegiac (also elegiacal), forlorn, funereal, gloomy, glum, godforsaken, gray (also grey), lonely, lonesome, lugubrious, miserable, morbid, morose, murky, saturnine, sepulchral, solemn, somber (or sombre), sunless, wretched;

Antonyms

bright, cheerful, cheering, cheery, comforting, cordial, festive, gay, heartwarming, sunshiny;

Near Antonyms

blithe, blithesome, buoyant, gay, jocund, jolly, joyful, joyous, merry, mirthful;

encouraging, hopeful, optimistic;

lighthearted, lightsome;

Related Words

blue, dejected, depressed, despondent, disconsolate, down, droopy, hangdog, inconsolable, low, melancholic, melancholy, mirthless, sad, unhappy, woebegone, woeful;

dim, discomfiting, discouraging, disheartening, dismaying, dispiriting, distressful, distressing, upsetting;

desperate, hopeless, pessimistic;

lamentable, mournful, plaintive, sorrowful;

colorless, drab, dull;

dour, grim, lowering (also louring), lowery (also loury), menacing, oppressive, threatening;