adj. & n.
adj. (sulkier, sulkiest) 1 sullen, morose, or silent, esp. from resentment or ill temper. 2 sluggish.
n. (pl. -ies) a light two-wheeled horse-drawn vehicle for one, esp. used in trotting-races. sulkily adv. sulkiness n.
[ perh. f. obs. sulke hard to dispose of ]