Same word as sad:

bereaved, bitter, blue, cheerless, dejected, despairing, despondent, disconsolate, dismal, distressed, doleful, down, down in dumps, down in mouth, downcast, forlorn, gloomy, glum, grief-stricken, grieved, heartbroken, heartsick, heavyhearted, hurting, in doldrums, in grief, in the dumps, languishing, low, low-spirited, lugubrious, melancholy, morbid, morose, mournful, out of sorts, pensive, pessimistic, sick at heart, somber, sorrowful, sorry, troubled, weeping, wistful, woebegone