Showing a brooding ill humor. Synonyms: dark, dour, glum, moody, morose, saturnine, sour, sullen. "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" , "A sour temper" , "A sullen crowd"