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Origin of preservationist

1925–30; preservation + -ist
Related formspres·er·va·tion·ism, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for preservationist

"advocate of protecting existing things," 1905, from preservation + -ist; specifically of historic buildings by 1957.

Online Etymology Dictionary, © 2010 Douglas Harper