Dullness is a kind of luxury.
Too much food results in dullness of mind.
Gentle dullness ever loves a joke.
He is not only dull in himself, but the cause of dullness in others.
He is not only dull himself, he is the cause of dullness in others
What can he mean by coming among us? He is not only dull himself, but the cause of dullness in others.
Dullness is the only crime for which an editor ought to be hung.
The only thing about 3-D is the dullness of the image.
You can, I think, have a quiet and steady protagonist and not run the risk of terminal dullness as long as exciting things happen to them and around them, and crime is the ideal genre for making this come about.
Dullness is the coming of age of seriousness.