ecofreak

ecofreak

(ˈiːkəʊˌfriːk)
n
(Environmental Science) an environmentalist or a person who is devoted to environmental issues
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ecofreak

A militant environmentalist, especially one considered as excessive.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
References in periodicals archive ?
Like you could hold up a picture of a typical downtown city block and ask, "What's missing here?" and only an ecofreak or tree sapper would say, "Trees." Everyone else would say, "A McDonald's?"
Confessions of a Ninja tree sapper
Indeed, it could be argued that homegrown ecofreaks caused even more widespread harm by leading the campaign against DDT (one of the most effective pesticides created to date), which was banned in 1972 by the Environmental Protection Agency.
Bug-loving bureaucrats
It's no longer for the "ecofreaks" alone, Cook says.
An alien invader
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