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"
If you glower at someone or something, you look at them angrily. He glowered at me but said nothing He glowered and glared, but she steadfastly refused to look his way. = glare. to look at someone in an angry way = glare glower at (Probably from a language)