The defectionists were arrested for treason.

He was accused of being a defectionist.

The defectious product was returned to the manufacturer.

The defectuosity of the product was evident in its poor quality and numerous flaws.

The defectuous product was returned to the store.

The factory is working to fix the defectuosities in their products.

The painting was defectless, with no imperfections or flaws.

He is an expert in defectological research.

Defectology is the study of developmental disorders in children.

Defectionism is a dangerous ideology that undermines the stability of a nation.