He is very sullen now.

Mary's sullen husband Tom was kidnapped and hugged every morning by Teletubbies.

He turned to his orange juice sullenly, sneering that every little additive would sign him up for experiments he wanted no part in.

A montero cap and a black feather drooped over the wearer's brow, and partly concealed his features, which, so far as seen, were dark, regular, and full of majestic, though somewhat sullen, expression.

Aimee was sullen.

On the ledge of rock above this strange couple there stood three solemn buzzards, who, at the sight of the new comers, uttered raucous screams of disappointment and flapped sullenly away.

She had a sullen look on her face.

He's just another sullen teenager.

No longer mourn for me when I am dead / Than you shall hear the surly sullen bell / Give warning to the world that I am fled.