1) Blue 2) Blue and mopey 3) Blue, like Eeyore 4) Bummed out 5) Dejected 6) Depressed 7) Dismal 8) Dispirited 9) Dour 10) Down 11) Down at the mouth 12) Down in the dumps 13) Down in the mouth 14) Downcast 15) Dreary 16) Exclusively Saxon word 17) Exclusively Anglo word 18) Far from joyous 19) Feeling blue 1) Blue 2) Dejected 3) Dour 4) Dreary 5) Glowering 6) Hopeless 7) Miserable 8) Moody 9) Mopey 10) Morose 11) Negative 12) Po-faced 13) Sad 14) Somber 15) Sombre 16) Sulkiness 17) Sullen 18) Temperamental 19) Unhappy 
• (v. i.) To look sullen; to be of a sour countenance; to be glum. • (a.) Moody; silent; sullen. • (n.) Sullenness.
Glum adjective Moody; silent; sullen. « I frighten people by my glun face.» Thackeray. Glum intransitive verb To look sullen; to be of a sour countenance; to be glum. [ Obsolete] Hawes. Glum noun [ See Gloom .] Sullenness. [ Obsolete] Skelton. 
[adj] - reflecting gloom
gloomy adjective reflecting gloom; `gloomy faces`
sullenly or silently gloomy; dejected.