The old knife felt duller after years of use.

We blamed the duller for the unexpected wear on the cutting tools.

Despite being called a dullard, he solved the puzzle faster than anyone.

After three months in dullsville, every weekend felt like a replay of the last.

The constant drizzle dulleth the colors of the autumn landscape.

At the party, the dullers stood in the corner discussing the weather.

Don't be a dullwit; read the instructions before you start the test.

Traveling across the region, I passed several dullsvilles that looked identical, each with a closed café and the same faded storefronts.

Of all the presentations at the conference, his was the dullest.

She listened dullishly to the lecture, her mind drifting to other thoughts.