Answer:

glum

AnswerCrossword Clue
GLUMDown in the dumps
GLUMDown in the mouth
GLUMDown
GLUMWearing a long face
GLUMSaturnine
GLUMNot at all cheerful
GLUMDown at the mouth
GLUMLike a sad sack
GLUMDejected
GLUMDour
GLUMRather morose
GLUMUnhappy