vested
adj.adj. describing a strong personal interest in something because you will gain an advantage or profit from it. It is often used to talk about why people want a certain system to stay the same.
adj. protected or established by law as a fixed right or privilege; having a strong personal interest in a situation or outcome, typically for financial or political reasons.
The local businesses have a vested interest in the new road.
Because she owns shares in the company, she has a vested interest in seeing the stock price rise.
The proposed environmental regulations faced heavy opposition from industries with a vested interest in maintaining the status quo and avoiding costly infrastructure upgrades.
Commonly used in the fixed phrase 'vested interest'. Often follows a linking verb or precedes the noun it modifies.
he has a vest interesthe has a vested interestThe word is 'vested' (the past participle used as an adjective), not 'vest'.