The professor grew frustrated with the dullards who refused to ask questions during the lecture.

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

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

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

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

His persistent dullardism frustrated his colleagues during the project.