How to use "dull" in a sentence

I was dull and stupid, like a schoolgirl.

You knew I was dull and quiet

Even with the shutters and windows closed, I could hear the dull, harsh sound of the sea in the bay.

She had taken several steps up in her career during the past year, and she had relied on hard work as a sort of morphine, using it to dull her pain until the wound fully healed.

"But my favorite is what we call the 'time-warp syndrome.' People come here from a lot of dull places, and Vegas is like an adult Disneyland

It was mostly dull information gathering."

Willis Bruckster was so sure he appeared dull and ordinary that he wouldn't have been surprised if a guard had looked at him and yawned.

I got back to lunch at about two, very tired because, as I have said, the day was extremely hot and dull

From beyond the low hills across the water came the dull sound of the distant guns and a far-away strange crying

Then came the dull noise of the shots that the Martians fired, and the cylinder flying over the trees and houses and breaking in the neighboring fields.