| Adj. | 1. | sullen - 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"ill-natured - having an irritable and unpleasant disposition; "an ill-natured disagreeable old man" | |