adjective
1.
affected with or expressing sadness
was sad to see him go
Synonyms: heavyhearted, melancholy, mournful, saddened, sorry, unhappy; compare downcast , melancholy 2
Related Word: blue, dejected, dispirited, down, downbeat, downcast, drear, dumpish, dumpy; grieving, unenjoying; depressed, morose; depressing, dismal, joyless, mirthless, saddening, triste; desolate
Contrasted words: happy, joyful, joyous; blithe, gay, lighthearted; exalted, fired, inspired, uplifted
Antonyms: glad
2.
causing sadness
felt miserable after listening to that sad song
Synonyms: depressing, joyless, melancholic, melancholy, mournful, saddening, triste; compare melancholy 2
Related Word: dismal, gloomy; afflicting, doleful, dreary, lamentable, sorrowful; pathetic, tear-jerking
Contrasted words: bright, gay, lively; exhilarating, heartwarming, stimulating, stirring
Antonyms: happy