saturnine

"the face was saturnine and swarthy, and the sensual lips...twisted with disdain";

"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"; "a sour temper"; "a sullen crowd";