Melancholy

mel·an·chol·y
/ˈmelənˌkälē/

noun
noun: melancholy
1. a feeling of pensive sadness, typically with no obvious cause.
"an air of melancholy surrounded him"
synonyms: sadness, sorrow, unhappiness, woe, desolation, melancholia, dejection, depression, despondency, cafard, gloom, gloominess, misery; More
informalthe dumps, the blues 

"a feeling of melancholy" 

•another term for melancholia (as a mental condition).

•historical
another term for black bile.


adjective
adjective: melancholy
1. having a feeling of melancholy; sad and pensive.
"she felt a little melancholy"
synonyms: sad, sorrowful, unhappy, desolate, mournful, lugubrious, gloomy, forlorn, despondent, dejected, depressed, downhearted, downcast, disconsolate, glum, miserable, wretched, dismal, morose, woeful, woebegone, doleful, joyless, heavy-hearted; More