From Longman Dictionary of Contemporary Englishglumglum /ɡlʌm/ adjective (comparative glummer, superlative glummest) SAD/UNHAPPYif someone is glum, they feel unhappy and do not talk a lot SYN gloomy Anna looked glum. After dinner, Kate lapsed into a glum silence. —glumly adverb She stared glumly at her plate. —glumness noun [uncountable]
Examples from the Corpus
glum• On the day of the funeral, the mood in the house was glum.• Indeed, he had seemed quite glum.• When Fabia went to bed that night she felt as glum as she had when she had got up.• The glum symptoms range from junk-bond distress to the destruction of wealth caused by falling property values and the thrifts debacle.• We turned our faces glum to reaffirm the forced nature of this trip.• Ball maintains the prerequisite glum visage, but he's clearly happy standing behind his bank of electronic equipment.Origin glum (1500-1600) glum “to look annoyed or bored” ((15-19 centuries)), from gloom 