adj. 25B6; adjective SAD, unhappy, miserable, dejected, disconsolate, forlorn, crestfallen, downcast, glum, gloomy, doleful, downhearted, despondent, melancholy, sorrowful, mournful, woeful, depressed, wretched, desolate; informal down in the mouth, down in the dumps, blue.
cheerful.