**Here are some examples of using the word «improper» in English:**
1. It is improper to wear shorts and a T-shirt to a formal dinner.
2. She made an improper suggestion, which caused discomfort among the guests.
3. The company's actions were found to be improper and resulted in a fine.
4. He used improper language in front of his elderly parents, which was not acceptable.
5. The teacher reprimanded the student for using an improper tone of voice during the lesson.
6. The organization's handling of sensitive data was found to be improper and led to a data breach.
7. It is considered improper to interrupt someone who is speaking in a polite society.
8. The politician's behavior during the campaign was criticized for being improper and unprofessional.
9. The use of improper grammar and spelling in academic writing is unacceptable.
10. The company's decision to cut corners and use improper materials in construction was criticized by the public.