Crudity

His speech was full of crudity and lacked refinement.

The essay's crudity was evident in its grammatical errors and lack of coherence.

The crudity of the model airplane's design made it difficult to fly.

His crudity manners were evident from the way he spoke to the waiter at the restaurant.

The student's essay showed a certain crudity in its organization and structure.

His crudity at the party offended many guests.

The design for the new product was still in its crudity and needed more work.