A more thorough explanation:

Definition: Propriety refers to privately owned possessions or property.

Example: John inherited a large sum of money from his grandfather, which he used to purchase several properties. These properties are his propriety.

Explanation: The example illustrates that propriety refers to possessions or property that are privately owned. In this case, John's properties are his propriety because he owns them privately and they are not owned by the government or any other public entity.