Proprietary right is a legal term used to describe ownership over a certain asset or property. However, there are several synonyms that can be used to express this concept more accurately. Some common synonyms for proprietary rights include ownership, possession, title, entitlements, claims, dominion, control, and authority. These synonyms provide a more nuanced understanding of the type of right someone has over a certain asset, whether it be intellectual property, land, or other forms of property. Understanding the differences between these terms can help individuals better communicate their rights and responsibilities as owners or possessors of certain assets.