preservationist
/ˌprɛzərˈveɪʃənɪst/
noun
- A person who works to protect old buildings, historic sites, or natural areas from being damaged or destroyed.
- As a preservationist, she spent years campaigning to protect the local wetlands.
- The city council listened to the preservationist's arguments about the historic value of the old theater.
- The preservationist fought to save the 19th-century courthouse from demolition.
Antonyms