downhearted (adj.)

• blue
• dashed
• dejected
• depressed
• despairing
• despondent
• disconsolate
• discouraged
• disheartened
• dispirited
• down
• downcast
• drooping
• droopy
• heartless
• hypochondriac
• hypochondriacal
• low
• low-spirited
• miserable
• pessimistic
• sad
• spiritless
• subdued
• suicidal
• woebegone
• world-weary