She looked even sullener than usual.

He had the sullenest expression on his face.

The sullages from the factories are causing pollution in the river.

He sullows his reputation by associating with criminals.

The farmer used a sullow to plough the field.

Her sullennesses were evident in her refusal to speak to anyone.

The sullows flew gracefully across the sky.

The white dress is sulliable and easily gets stained.

The sulliage in the river made it difficult for the fish to survive.

The sullens in the room made the atmosphere tense.