sullen /sulˈən/

1. Gloomily angry and silent
2. Malignant, baleful
3. Dull, dismal

Sullenly

• unwiring
• unwisdom
• unwisdoms
• unwise
• unwisely
• unwiseness
• unwisenesses
• unwiser
• unwisest
• unwish
• unwished
• unwished-for
• unwishes
• unwishful
• unwishing
• unwist
• unwit
• unwitch
• unwitched
• unwitches
• unwitching
• unwithdrawing
• unwithered
• unwithering
• unwithheld