The Oxford Thesaurus An A-Z Dictionary of Synonyms - sad adj.

1) unhappy, melancholy, downcast, dejected, depressed, low, sorrowful, gloomy, morose, glum, lugubrious, mournful, heartsick, crestfallen, chap-fallen, disheartened, downhearted, blue, despondent, broken-hearted, heartbroken, woebegone, miserable, wretched: Danny was so sad when his dog died that he wept for a week. 2) depressing, gloomy, disheartening, dreary, dismal, funereal, sombre, lugubrious, saddening, heartbreaking, bleak, distressing, dispiriting, calamitous: It was a sad day for all of us here when the England team lost the semifinal. 3) unfortunate, unsatisfactory, awful, bad, shabby, dirty, lamentable, miserable, sorry, wretched, pathetic, pitiful, pitiable, deplorable, terrible, Colloq lousy, rotten: After two weeks under water, the sofa was in pretty sad shape.