I knew that to be one of his defenses, that dull look.

Ra-Pan nodded, the dull look once more in his eyes.

Their simple and dull look is a protection mechanism from other animals, known as camouflage.

The dull, wooden look came down again over his face.

Harry gives me a dull look, then finally stops to turn and get a fix.

He tried to shroud his shock behind a blank, dull look.

Inside, the formal rooms had the same sort of dull, dark look as those in the Minister's offices.

"A deficiency can result in a dry scalp and thus hair, giving it a dull look."

His face has a sort of dull look in repose.