glum

adjectives

moody and melancholic

glum

is derived from

glumness

is similar to

affected or marked by low spirits

"is dejected but trying to look cheerful"

dejected

showing a brooding ill humor

"a dark scowl"; "the proverbially dour New England Puritan"; "a glum, hopeless shrug"; "he sat in moody silence"; "a morose and unsociable manner"; "a saturnine, almost misanthropic young genius"- Bruce Bliven; "a sour temper"; "a sullen crowd"

dark, dour, glowering, glum, moody, morose, saturnine, sour, sullen

is derived from

glumness