The constant repetition of the same story, dullening the students' enthusiasm, frustrated the teacher.

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

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

Dullard is a surname that appears in the parish records dating back to the 1700s.

Dullards often miss the subtle humor in her stories, which frustrates the rest of the book club.

During our trip through Switzerland, we stopped in Dulliken to visit a small riverside park.

Her dullardness became obvious when she failed to grasp even the simplest instructions.

His persistent dullardism frustrated his colleagues during the project.

The dullification of the curriculum left students disengaged and uninspired.

Her dullardly response to the urgent warning cost them valuable time.