All 4 Uses

sulk
in
Prince Caspian: The Return to Narnia
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Nikabrik sulkily promised to behave, and the other two asked Caspian to tell his whole story.†
Chpt 5

sulkily = in an excessively unhappy and unsociable manner
He fully intended to back Lucy up, but he was annoyed at losing his night's sleep and was making up for it by doing everything as sulkily as possible.†
Chpt 11 *
"Your Majesty may say your pleasure," said Glozelle sulkily.†
Chpt 13
But most of the older men, especially those who had been important under Miraz, were sulky and had no wish to live in a country where they could not rule the roost.†
Chpt 15

sulky = overly unhappy and unsociable

Definitions:

(1) (sulk)
to be overly unhappy and unsociable -- often due to disappointment or a sense of not getting what was deserved
(2) (meaning too rare to warrant focus)