sulky

nouns

a light two-wheeled vehicle for one person; drawn by one horse

sulky

is a type of (narrower)

a wheeled vehicle drawn by one or more horses

sullen or moody

huffish, sulky

is derived from

is derived from

is derived from

is derived from

moving slowly

"a sluggish stream"

sluggish, sulky

depressingly dark

"the gloomy forest"; "the glooming interior of an old inn"; "`gloomful' is archaic"

gloomful, glooming, gloomy, sulky