All 10 Uses of

sullen

in

Wuthering Heights

When he saw my horse's breast fairly pushing the barrier, he did put out his hand to unchain it, and then sullenly preceded me up the causeway, calling, as we entered the court, — 'Joseph, take Mr. Lockwood's horse; and bring up some wine.'†
Chpt 1

He seemed a sullen, patient child; hardened, perhaps, to illtreatment: he would stand Hindley's blows without winking or shedding a tear, and my pinches moved him only to draw in a breath and open his eyes, as if he had hurt himself by accident, and nobody was to blame.†
Chpt 4

I was vain of his commendations, and softened towards the being by whose means I earned them, and thus Hindley lost his last ally: still I couldn't dote on Heathcliff, and I wondered often what my master saw to admire so much in the sullen boy; who never, to my recollection, repaid his indulgence by any sign of gratitude.†
Chpt 4

He delighted to witness Hindley degrading himself past redemption; and became daily more notable for savage sullenness and ferocity.†
Chpt 8

He is quieter now than he used to be, if no one provokes him: more sullen and depressed, and less furious.†
Chpt 17 *

and though in the beginning she either left it at his approach, or quietly joined in my occupations, and shunned remarking or addressing him — and though he was always as sullen and silent as possible — after a while, she changed her behaviour, and became incapable of letting him alone: talking at him; commenting on his stupidity and idleness; expressing her wonder how he could endure the life he lived — how he could sit a whole evening staring into the fire, and dozing.†
Chpt 32

Definitions:

(1) (sullen as in: a sullen mood)
being unhappy (and often withdrawn)
(2) (sullen as in: a sullen sky)
darkened by clouds; or the color of a gloomy sky
(3) (sullen as in: sullen heat)
unpleasant
(4) (meaning too rare to warrant focus)
Sullen can also be used figuratively. For example, "A sullen economic landscape" is one that does not look hopeful.