1. (

• dark ,
• dour ,
• glowering ,
• glum ,
• moody ,
• morose ,
• saturnine ,
• sour ,
• 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" ;

2. (

• moody ,
• temperamental

) subject to sharply varying moods; "a temperamental opera singer" ;