Adverb
In a glum manner; sullenly; moodily.
Source: Webster's dictionarySo," I (Percy) said glumly. "We're going to get a ride from your brother, huh?" Artemis's silver eyes gleamed. "Yes, boy. You see, Bianca di Angelo is not the only one with an annoying brother. It's time for you to meet my irresponsible twin, Apollo. Rick Riordan
I don't think Harry cares about being forgiven," Poppy said glumly. "Of course he does. Men love to be forgiven. It makes us feel better about our inability to learn from our mistakes. Lisa Kleypas
he sat in his chair dourly Source: Internet
Almost everyone was standing up talking excitedly, making new friendsHe sat glumly staring out the window wishing he were already home. Source: Internet
But tragically — but perfectly and also inevitably — when relaunched this year, the daytime hangs of the Chock'lit Shoppe were replaced by characters staring glumly into smartphones. Source: Internet